MESON Chess Problem Database
Problem Display
PID: 18438 (8/6p1/4R3/4qp1N/1n2kp2/1Q2P2K/4P3/8 w - - 0 1)
Meurs, Abraham
Time & Tide, 1955
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxe6
- 2.Qxe6#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...fxe3
- 2.Qc4#
- 1...f3
- 2.Sg3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Qxe6
- Tries
- 1.Kh2?
- 1...f3+
- 2.Sg3#
- 1...Qxe6
- 2.Qxe6#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...fxe3+!
- 1...f3+
- 1.Kh4?
- 1...Qxe6
- 2.Qxe6#
- 1...fxe3
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sg3#
- 1...g6
- 2.Sf6#
- 1...g5+!
- 1...Qxe6
- 1.Sxg7?
- 1...Qxe6
- 2.Qxe6#
- 1...fxe3
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3!
- 1...Qxe6
- 1.Re7?
- 1...fxe3
- 2.Qc4#
- 1...Qe6
- 2.Rxe6#
- 2.Qxe6#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sg3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Qxe7!
- 1...fxe3
- 1.Re8?
- 1...fxe3
- 2.Qc4#
- 1...Qe6
- 2.Rxe6#
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...f3
- 2.Sg3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Qxe8!
- 1...fxe3
- 1.Qc3?
- threat
- 2.Rxe5#
- 2.Qd4#
- 2.Qxe5#
- 1...Qxe6
- 2.Qd4#
- 1...fxe3
- 2.Rxe5#
- 2.Qxe5#
- 2.Qc4#
- 1...Sd3
- 2.Qd4#
- 2.Qxd3#
- 1...Sc2
- 2.Rxe5#
- 2.Qxe5#
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...Kd5!
- threat
- 1.Kh2?
- Keys
- 1.Kg2!
- 1...f3+
- 2.exf3#
- 1...Qxe6
- 2.Qxe6#
- 1...fxe3
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...f3+
- 1.Kg2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(d);N_SPINQ(d),OGATE,XR(F)::QAR2(B),XQ(d)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(c);SBLOCK,XP(C)::QAR2(B)
- P(c);N_GUARD::S(E)
- P(f);N_GUARD::S(E)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- P(c);CHECK,N_GUARD::S(E)
- Q(d);N_SPINQ(d),OGATE,XR(F)::QAR2(B),XQ(d)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(f);N_GUARD::S(E)
- Refutation
- P(c);CHECK,XP(C)
- Try
- K(D);P-FLIGHT
- Vars
- Q(d);N_SPINQ(d),OGATE,XR(F)::QAR2(B),XQ(d)
- P(c);SBLOCK,XP(C)::QAR2(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(c);N_GUARD::S(E)
- P(f);N_GUARD::S(E)
- Refutation
- P(f);CHECK
- Try
- S(E);XP(f)
- Vars
- Q(d);N_SPINQ(d),OGATE,XR(F)::QAR2(B),XQ(d)
- P(c);SBLOCK,XP(C)::QAR2(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- P(c);
- Try
- R(F);
- Vars
- P(c);SBLOCK,XP(C)::QAR2(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(c);N_GUARD::S(E)
- P(f);N_GUARD::S(E)
- Refutation
- Q(d);N_SPINQ(d),XR(F)
- Try
- R(F);
- Vars
- P(c);SBLOCK,XP(C)::QAR2(B)
- Q(d);OGATEB::R(F),XQ(d)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(c);N_GUARD::S(E)
- P(f);N_GUARD::S(E)
- Refutation
- Q(d);N_SPINQ(d),XR(F)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(d);N_SPINQ(d),XR(F)::QAR1(B)
- S(a);N_GUARD::QAB1(B)
- Refutation
- K(b);N_SPINQ(d),S_FLIGHT
- Try
- Actual
- K(D);S_FLIGHT
- Vars
- P(c);CHECK,OGATE::P(A),XP(c)
- Q(d);N_SPINQ(d),OGATE,XR(F)::QAR2(B),XQ(d)
- P(c);SBLOCK,XP(C)::QAR2(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(f);N_GUARD::S(E)
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).