MESON Chess Problem Database
Problem Display
PID: 79190 (3r4/1pR4P/1p4QK/3kB1nP/3P1p2/7n/3N2N1/8 w - - 0 1)
Strydom, Jan
The Tablet, 1963
(First published on Sat Mar 2 1963)
#2
9 + 7
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Rxd7#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Rh8
- 2.Rd7#
- 2.Qd6#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd6
- Tries
- 1.Sb1?
- threat
- 2.Sc3#
- 1...Se4
- 2.Qf7#
- 1...Sf7+!
- threat
- 1.Se4?
- threat
- 2.Sc3#
- 1...Sxe4
- 2.Qf7#
- 1...Sf7+!
- threat
- 1.Rc1?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Sg1
- 2.Sxf4#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd7!
- 1...Sf7+
- 1.Rc2?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Sg1
- 2.Sxf4#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd7!
- 1...Sf7+
- 1.Rc3?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Sg1
- 2.Sxf4#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd7!
- 1...Sf7+
- 1.Rc4?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd7!
- 1...Sf7+
- 1.Rc8?
- threat
- 2.Rxd8#
- 1...Sf7+
- 2.Qxf7#
- 1...Rxc8
- 2.Qd6#
- 1...Rd6
- 2.Qxd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Rd7!
- threat
- 1.Qxb6?
- threat
- 2.Rc5#
- 2.Qb3#
- 1...Rd6+
- 2.Qxd6#
- 1...Rc8
- 2.Rd7#
- 2.Qb3#
- 2.Qd6#
- 1...Se4
- 2.Qb3#
- 1...Se6
- 2.Qb3#
- 2.Qxb7#
- 1...Sf7+!
- threat
- 1.Qf6?
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Rd7
- 2.Rxd7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Rh8
- 2.Rd7#
- 2.Qd6#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Se6!
- 1...Sf7+
- 1.h8Q?
- threat
- 2.Qxd8#
- 1...Sf7+
- 2.Qxf7#
- 1...Rd7
- 2.Rxd7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Rxh8+!
- threat
- 1.h8S?
- 1...Sf7+
- 2.Qxf7#
- 1...Rd7
- 2.Rxd7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Sh7
- 2.Qf7#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rxh8+!
- 1...Sf7+
- 1.h8B?
- 1...Sf7+
- 2.Qxf7#
- 1...Rd7
- 2.Rxd7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Sh7
- 2.Qf7#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rxh8+!
- 1...Sf7+
- 1.h8R?
- threat
- 2.Rxd8#
- 1...Sf7+
- 2.Qxf7#
- 1...Rd7
- 2.Rxd7#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Rd7#
- 2.Qd6#
- 1...Rb8
- 2.Rd7#
- 2.Qd6#
- 1...Rc8
- 2.Rd7#
- 2.Qd6#
- 1...Re8
- 2.Rd7#
- 2.Qd6#
- 1...Rf8
- 2.Rd7#
- 2.Qd6#
- 1...Rg8
- 2.Rd7#
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...Rxh8+!
- threat
- 1.Sb1?
- Keys
- 1.Qf5!
- 1...Rd6+
- 2.Bf6#
- 1...Sf7+
- 2.Qxf7#
- 1...Sxh7
- 2.Qf7#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Qd7#
- 1...Rb8
- 2.Qd7#
- 1...Rc8
- 2.Qd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Rg8
- 2.Qd7#
- 1...Rh8
- 2.Qd7#
- 1...Sg1
- 2.Sxf4#
- 1...Sf2
- 2.Sxf4#
- 1...Sf3
- 2.Qf7#
- 1...Se4
- 2.Qf7#
- 1...Se6
- 2.Qe4#
- 1...f3
- 2.Se3#
- 1...b5
- 2.Rc5#
- 1...Rd6+
- 1.Qf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::R(H),XR(g)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- S(d);N_GUARD,SBLOCK::QAB(F)
- Refutation
- S(d);CHECK
- Try
- S(A);
- Threat
- S(A)
- Vars
- S(d);N_GUARD,SBLOCK,XS(A)::QAB(F)
- Refutation
- S(d);CHECK
- Try
- R(H);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- S(a);N_GUARD::S(B),XP(b)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINP(I)::QAR1(F)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);
- Try
- R(H);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- S(a);N_GUARD::S(B),XP(b)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINP(I)::QAR1(F)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);
- Try
- R(H);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- S(a);N_GUARD::S(B),XP(b)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINP(I)::QAR1(F)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);
- Try
- R(H);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINP(I)::QAR1(F)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);
- Try
- R(H);
- Threat
- R(H),XR(g)
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- R(g);N_GUARD,XR(H)::QAR1(F)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- R(g);N_GUARD::QAR1(F)
- R(g);N_GUARD,P_PINP(I)::QAR1(F)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- Refutation
- R(g);
- Try
- Q(F);XP(e)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,N_GUARD::QAR1(F),XR(g)
- S(d);::QAB(F)
- Refutation
- S(d);CHECK
- Try
- Q(F);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- R(g);N_GUARD::R(H),XR(g)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- S(d);
- Try
- P(I);
- Threat
- QAR(I),XR(g)
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- R(g);N_GUARD::R(H),XR(g)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- Refutation
- R(g);CHECK,XQ(I)
- Try
- P(I);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- R(g);N_GUARD::R(H),XR(g)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);CHECK,XS(I)
- Try
- P(I);
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- R(g);N_GUARD::R(H),XR(g)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
- Refutation
- R(g);CHECK,XB(I)
- Try
- P(I);
- Threat
- R(I),XR(g)
- Vars
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- R(g);N_GUARD::R(H),XR(g)
- R(g);N_GUARD,P_PINQ(F)::QAR1(F),XR(g)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- Refutation
- R(g);CHECK,XR(I)
- Try
- Actual
- Q(F);
- Vars
- R(g);CHECK,SBLOCK::QAR(F)+B(D)
- S(d);CHECK,N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD,XP(I)::QAB(F)
- R(g);N_GUARD::QAR2(F),XR(g)
- R(g);N_GUARD::QAR2(F)
- R(g);N_GUARD,P_PINP(I)::QAR2(F)
- S(a);N_GUARD::S(B),XP(b)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD,SBLOCK::QAB1(F)
- P(b);N_GUARD::S(B)
- P(e);N_GUARD::R1(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).