MESON Chess Problem Database
Problem Display
PID: 229251 (1R1NN3/r1p4p/1nP4p/2kP1KnP/8/1Q2P3/8/8 w - - 0 1)
Schiffert, Gyorgy
Magyar Sakkvilag, 1926
#2
9 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sb7#
- 1...Ra2
- 2.Sb7#
- 1...Ra3
- 2.Sb7#
- 1...Ra4
- 2.Sb7#
- 1...Ra5
- 2.Sb7#
- 1...Ra6
- 2.Sb7#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sa4
- 2.Rb5#
- 2.Qb5#
- 1...Sc4
- 2.Rb5#
- 2.Qb5#
- 1...Sxd5
- 2.Rb5#
- 2.Qb5#
- 1...Sd7
- 2.Rb5#
- 2.Qb5#
- 1...Sa8
- 2.Rb5#
- 2.Qb5#
- 1...Sc8
- 2.Rb5#
- 2.Qb5#
- 1...Ra1
- Tries
- 1.Kg4?
- 1...Sxd5
- 2.Rb5#
- 2.Qb5#
- 1...Sc4
- 2.Rb5#
- 2.Qb5#
- 1...Ra1
- 2.Sb7#
- 1...Ra2
- 2.Sb7#
- 1...Ra3
- 2.Sb7#
- 1...Ra5
- 2.Sb7#
- 1...Ra6
- 2.Sb7#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sa4
- 2.Rb5#
- 2.Qb5#
- 1...Sd7
- 2.Rb5#
- 2.Qb5#
- 1...Sa8
- 2.Rb5#
- 2.Qb5#
- 1...Sc8
- 2.Rb5#
- 2.Qb5#
- 1...Ra4+!
- 1...Sxd5
- 1.Rxb6?
- threat
- 2.Rb5#
- 2.Qb5#
- 1...Ra5
- 2.Sb7#
- 1...Rb7
- 2.Sxb7#
- 2.Qb5#
- 1...cxb6!
- threat
- 1.Qc3+?
- 1...Kxd5
- 2.Qd4#
- 1...Sc4
- 2.Qd4#
- 1...Kb5!
- 1...Kxd5
- 1.Qb4+?
- 1...Kxd5
- 2.Sf6#
- 2.Qd4#
- 2.Qb5#
- 1...Kxb4!
- 1...Kxd5
- 1.Qxb6+?
- 1...Kc4
- 2.Qd4#
- 1...Kxd5
- 2.Qd4#
- 2.Qb5#
- 1...cxb6!
- 1...Kc4
- 1.Kg4?
- Keys
- 1.Sf6!
- 1...Kd6
- 2.Qb4#
- 1...Sxd5
- 2.Qxd5#
- 1...Ra1
- 2.Sb7#
- 1...Ra2
- 2.Sb7#
- 1...Ra3
- 2.Sb7#
- 1...Ra4
- 2.Sb7#
- 1...Ra5
- 2.Sb7#
- 1...Ra6
- 2.Sb7#
- 1...Rb7
- 2.Sxb7#
- 1...Ra8
- 2.Sb7#
- 1...Sf3
- 2.Se4#
- 1...Sh3
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Se6
- 2.Se4#
- 1...Sf7
- 2.Se4#
- 1...Sa4
- 2.Qb4#
- 1...Sc4
- 2.Qb4#
- 1...Sd7
- 2.Qb4#
- 1...Sa8
- 2.Qb4#
- 1...Sc8
- 2.Qb4#
- 1...Kd6
- 1.Sf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::S(H)
- R(e);N_GUARD::S(H),XR(e)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- R(e);N_GUARD::S(H)
- R(e);N_GUARD::S(H),XR(e)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- Refutation
- R(e);CHECK
- Try
- R(G);XS(c)
- Threat
- DUALS(2)
- Vars
- R(e);N_GUARD::S(H)
- Refutation
- P(f);XR(G)
- Try
- Q(A);CHECK
- Vars
- K(a);P-FLIGHT,XP(C)::QAR1(A)
- S(c);P_SPINS(c)::QAB1(A)
- Refutation
- K(a);P-FLIGHT,P_SPINS(c)
- Try
- Q(A);CHECK
- Refutation
- K(a);P_SPINS(c),S_FLIGHT,XQ(A)
- Try
- Q(A);CHECK,XS(c)
- Vars
- K(a);OGATE,P-FLIGHT::QAR1(A)
- Refutation
- P(f);XQ(A)
- Try
- Actual
- S(I);
- Vars
- K(a);S_FLIGHT::QAB(A)
- S(c);OGATE,XP(C)::QAR1(A),XS(c)
- R(e);N_GUARD::S(H)
- R(e);N_GUARD::S(H),XR(e)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- S(c);::QAB1(A)
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).