MESON Chess Problem Database
Problem Display
PID: 39526 (2K5/ppPN1p2/qp3B2/n2N1RP1/r1k5/p2p4/P5n1/1Q6 w - - 0 1)
Penrose, Lionel Sharples
1st Prize, Good Companions, 1917
#2
9 + 11
| 56 | The Problemist | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qb5
- 2.Qc1#
- 1...Rb4
- 2.Qxb4#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...Sb3
- 2.Qxb3#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...Qb5
- Tries
- 1.Kb8?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Qb5
- 2.Qc1#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...Sc6+!
- 1...Rb4
- 1.Kd8?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Qb5
- 2.Qc1#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...Sc6+!
- 1...Rb4
- 1.Sc3?
- 1...Sb3
- 2.Qxb3#
- 1...Qb5
- 2.Qxb5#
- 1...Se1
- 2.Rf4#
- 1...Se3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qe4#
- 1...b5
- 2.Rc5#
- 1...Rb4!
- 1...Sb3
- 1.Ba1?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Se1
- 2.Se3#
- 1...Qb5
- 2.Qc1#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...f6!
- 1...Rb4
- 1.Bg7?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Se1
- 2.Se3#
- 1...Qb5
- 2.Qc1#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...f6!
- 1...Rb4
- 1.Bh8?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Se1
- 2.Se3#
- 1...Qb5
- 2.Qc1#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...f6!
- 1...Rb4
- 1.Rf3?
- threat
- 2.Qxd3#
- 1...Se1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...d2
- 2.Qd3#
- 1...Kxd5!
- threat
- 1.Rf4+?
- 1...Sxf4
- 2.Se3#
- 1...Kxd5!
- 1...Sxf4
- 1.g6?
- 1...Rb4
- 2.Qxb4#
- 1...Sb3
- 2.Qxb3#
- 1...Se1
- 2.Se3#
- 1...Qb5
- 2.Qc1#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sh4
- 2.Se3#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qf1#
- 1...b5
- 2.Qc1#
- 1...fxg6!
- 1...Rb4
- 1.Kb8?
- Keys
- 1.Se7!
- 1...Sb3
- 2.Qxb3#
- 1...Se1
- 2.Rf4#
- 1...Qb5
- 2.Qxb5#
- 1...Rb4
- 2.Qc1#
- 1...Se3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Sc6
- 2.Qb3#
- 1...d2
- 2.Qe4#
- 1...b5
- 2.Rc5#
- 1...Sb3
- 1.Se7!
This is a version of 3049
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(g);SBLOCK::QAR(A)
- R(d);N_GUARD::QAR1(A),XR(d)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- S(f);CHECK
- Try
- K(I);P-FLIGHT
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- S(f);CHECK
- Try
- S(C);
- Vars
- S(f);N_GUARD::QAB1(A),XS(f)
- Q(g);N_GUARD::QAB1(A),XQ(g)
- S(a);N_GUARD::R(D)
- S(a);N_GUARD::R(D),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATE::QAR2(A)
- P(h);N_GUARD::R1(D)
- Refutation
- R(d);
- Try
- B(F);
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(a);N_GUARD::S(C)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- P(k);
- Try
- B(F);
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(a);N_GUARD::S(C)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- P(k);
- Try
- B(F);
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(a);N_GUARD::S(C)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- P(k);
- Try
- R(D);
- Threat
- QAB1(A),XP(c)
- Vars
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(c);::QAB1(A)
- Refutation
- K(e);S_FLIGHT,XS(C)
- Try
- R(D);CHECK
- Vars
- S(a);XR(D)::S(C)
- Refutation
- K(e);S_FLIGHT,XS(C)
- Try
- P(E);
- Vars
- R(d);N_GUARD::QAR1(A),XR(d)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(a);N_GUARD::S(C)
- Q(g);SBLOCK::QAR(A)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATEB::QAB(A)
- P(h);SBLOCK::QAR(A)
- Refutation
- P(k);XP(E)
- Try
- Actual
- S(C);
- Vars
- S(f);N_GUARD::QAB1(A),XS(f)
- S(a);N_GUARD::R(D)
- Q(g);N_GUARD::QAB1(A),XQ(g)
- R(d);SBLOCK::QAR(A)
- S(a);N_GUARD::R(D),XS(a)
- S(f);N_GUARD::QAB1(A)
- P(c);OGATE::QAR2(A)
- P(h);N_GUARD::R1(D)
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).