MESON Chess Problem Database
Problem Display
PID: 162348 (8/Np1P1bK1/p3p3/2R5/rk2rp2/p1N5/Bb1Q2p1/6B1 w - - 0 1)
Labai, Zoltan
2/3 Prize, Sachmatija, 2009
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qd4#
- 1...Re2
- 2.Qd4#
- 1...Re3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Re5
- 2.Sd5#
- 2.Qd4#
- 1...Bc1
- 2.Sd5#
- 1...Bxc3+
- 2.Qxc3#
- 1...a5
- 2.Rb5#
- 1...e5
- 2.Sd5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Re1
- Tries
- 1.Kh6?
- threat
- 2.Sd5#
- 1...Bxc3
- 2.Qxc3#
- 1...Re3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5!
- threat
- 1.Kxf7?
- threat
- 2.Sd5#
- 1...Bxc3
- 2.Qxc3#
- 1...Re3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5!
- threat
- 1.Kf8?
- threat
- 2.Sd5#
- 1...Bxc3
- 2.Qxc3#
- 1...Re3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5!
- threat
- 1.Qd1?
- threat
- 2.Qb3#
- 2.Qxa4#
- 1...Re3
- 2.Qd4#
- 1...Rc4
- 2.Qb3#
- 1...Rd4
- 2.Qxd4#
- 1...b5
- 2.Sc6#
- 1...Ra5
- 2.Qb3#
- 1...e5
- 2.Qxa4#
- 1...Bxc3+!
- threat
- 1.Qd6?
- threat
- 2.Qb6#
- 1...Bxc3+
- 2.Re5#
- 1...b5
- 2.Sc6#
- 1...Ra5
- 2.Rc4#
- 1...b6
- 2.Sc6#
- 2.Qxb6#
- 1...Rc4!
- threat
- 1.d8Q?
- threat
- 2.Qb6#
- 1...Bxc3+
- 2.Qxc3#
- 1...Ra5
- 2.Qxa5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 2.Qxb6#
- 1...Be8!
- threat
- 1.Kh6?
- Keys
- 1.Re5!
- threat
- 2.Sd5#
- 1...Bxc3
- 2.Qd6#
- 1...Ra5
- 2.Rxe4#
- 1...Re3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD,N_PINS(D)::QAR2(C),XR(f)
- B(a);N_PINS(D)::QAB(C)+S(D),DCHECK
- B(a);CHECK,OGATE,P_SPINB(a),XS(D)::QAB1(C),XB(a)
- P(h);N_GUARD::R1(E)
- P(i);N_PINS(D)::QAB(C)+S(D),DCHECK
- P(j);N_GUARD::S(F)
- Tries
- Try
- K(H);N_SPINS(D),S_FLIGHT
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(D)::QAB1(C),XB(a)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD::QAR2(C),XR(f)
- Refutation
- R(d);
- Try
- K(H);N_SPINS(D),P-FLIGHT,XB(k)
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(D)::QAB1(C),XB(a)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD::QAR2(C),XR(f)
- Refutation
- R(d);
- Try
- K(H);N_SPINS(D),S_FLIGHT
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(D)::QAB1(C),XB(a)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD::QAR2(C),XR(f)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD::QAR2(C)
- R(f);::QAR1(C)
- R(f);N_GUARD,N_PINS(D)::QAR2(C),XR(f)
- P(j);N_GUARD::S(F)
- R(d);::QAR1(C)
- P(i);N_PINS(D)::QAR1(C),XR(d)
- Refutation
- B(a);CHECK,XS(D)
- Try
- Q(C);
- Threat
- QAR2(C)
- Vars
- B(a);CHECK,SBLOCK,XS(D)::QAB(C)+R(E)
- P(j);N_GUARD::S(F)
- R(d);SBLOCK::QAB(C)+R(E),DCHECK
- Refutation
- R(f);
- Try
- P(G);
- Threat
- QAR2(G)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(D)::QAB1(C),XB(a)
- R(d);N_GUARD::QAB1(G),XR(d)
- P(j);N_GUARD::S(F)
- Refutation
- B(k);
- Try
- Actual
- R(E);N_SPINS(D)
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- B(a);P_PINR(E),P_SPINB(a),SBLOCK,XS(D)::QAB(C)
- R(d);SBLOCK::R(E),XR(f)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD::QAR2(C),XR(f)
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).