MESON Chess Problem Database
Problem Display
PID: 11887 (8/3N1ppp/1Pp4b/2pk1P2/2N2r2/1B2BP2/2p3Q1/2K5 w - - 0 1)
Lender, Baruch
2nd Comm., Israel Ring Ty., 1973
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Qxf3#
- 1...Rxc4
- 2.Qd2#
- 1...Re4
- 2.fxe4#
- 1...Rg4
- 2.fxg4#
- 1...Rh4
- 2.f4#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Rxf3
- Tries
- 1.Sce5+?
- 1...Kd6
- 2.Bxc5#
- 1...Rc4
- 2.Qd2#
- 1...c4!
- 1...Kd6
- 1.Bxf4?
- threat
- 2.Qd2#
- 1...Kd4
- 2.Qd2#
- 1...Bxf4+!
- threat
- 1.b7?
- threat
- 2.Sdb6#
- 1...Rxf3
- 2.Qxf3#
- 1...Rxc4
- 2.Qd2#
- 1...Rxf5!
- threat
- 1.Sce5+?
- Keys
- 1.Bxc5!
- threat
- 2.Se3#
- 1...Rxf3+
- 2.Sd2#
- 1...Rxc4+
- 2.f4#
- threat
- 1.Bxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(b);OGATE,P_PINB(D),P_SPINR(b),XP(E)::QAB(B),XR(b)
- R(b);N_GUARD,P_PINB(D),P_SPINR(b),XS(F)::QAR(B)
- R(b);OGATE,P_PINB(D)::P(E),XR(b)
- R(b);OGATE,P_PINB(D)::QAB(B)+P(E),XR(b)
- R(b);OGATE,P_PINB(D)::QAB(B)+P(E)
- P(h);N_GUARD::S(I)
- Tries
- Try
- S(F);CHECK
- Vars
- K(d);P-FLIGHT::B(D),XP(c)
- R(b);P_PINB(D),P_SPINR(b)::QAR(B)
- Refutation
- P(c);P_SPINP(c)
- Try
- B(D);P_SPINB(D),XR(b)
- Threat
- QAR(B)
- Vars
- K(d);P-FLIGHT::QAR2(B)
- Refutation
- B(f);CHECK,XB(D)
- Try
- P(H);
- Threat
- S(I)
- Vars
- R(b);OGATE,P_PINB(D),P_SPINR(b),XP(E)::QAB(B),XR(b)
- R(b);N_GUARD,P_PINB(D),P_SPINR(b),XS(F)::QAR(B)
- Refutation
- R(b);P_PINB(D),XP(G)
- Try
- Actual
- B(D);XP(c)
- Threat
- B(C)+S(F),DCHECK
- Vars
- R(b);CHECK,N_GUARD,P_SPINR(b),XP(E)::B(C)+S(F)
- R(b);CHECK,OGATE,P_SPINR(b),XS(F)::QAB(B)+P(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).