MESON Chess Problem Database
Problem Display
PID: 46404 (n7/8/4Q2p/1pppPB2/Npk2KR1/1pbNB3/1Pn1p3/2R5 w - - 0 1)
Kostadinov, Diyan
StrateGems, 2003
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Kf3#
- 1...Bxb2
- 2.Sdxb2#
- 1...Bd2
- 2.Kf3#
- 2.Kg3#
- 1...Bxe5+
- 2.Kxe5#
- 2.Sxe5#
- 1...Sa1
- 2.Kf3#
- 2.Kg3#
- 1...Se1
- 2.Kg3#
- 1...Sa3
- 2.Kf3#
- 2.Kg3#
- 1...Sxe3
- 2.Kxe3#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 1...bxa4
- 2.Qa6#
- 1...Be1
- Tries
- 1.Sf2?
- threat
- 2.Bd3#
- 1...Bxe5+
- 2.Kxe5#
- 1...Sxe3
- 2.Kxe3#
- 1...Se1
- 2.Kg3#
- 1...e1S!
- threat
- 1.Sdxc5?
- threat
- 2.Bd3#
- 1...Bxe5+
- 2.Kxe5#
- 1...Sxe3
- 2.Kxe3#
- 1...Se1
- 2.Kg3#
- 1...e1S!
- threat
- 1.Be4?
- threat
- 2.Qxd5#
- 1...Bxe5+
- 2.Sxe5#
- 1...bxa4
- 2.Qa6#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 1...Sxe3!
- threat
- 1.Qc8?
- threat
- 2.Qxc5#
- 1...Bxe5+
- 2.Sxe5#
- 1...Sc7
- 2.Sb6#
- 1...Bd4!
- threat
- 1.Qb6?
- threat
- 2.Qxc5#
- 1...Bxe5+
- 2.Sxe5#
- 1...Sxb6
- 2.Sxb6#
- 1...Bd4!
- threat
- 1.Qc6?
- threat
- 2.Qxc5#
- 1...Bxe5+
- 2.Sxe5#
- 1...Bd4!
- threat
- 1.Qd6?
- threat
- 2.Qxc5#
- 1...Bxe5+
- 2.Sxe5#
- 1...Bd4!
- threat
- 1.Qe7?
- threat
- 2.Qxc5#
- 1...Bxe5+
- 2.Sxe5#
- 1...Bd4!
- threat
- 1.Sf2?
- Keys
- 1.Se1!
- threat
- 2.Bd3#
- 1...Bxe5+
- 2.Kxe5#
- 1...Bxe1
- 2.Kf3#
- 1...Sxe1
- 2.Kg3#
- 1...Sxe3
- 2.Kxe3#
- threat
- 1.Se1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(d);N_GUARD,P_SPINS(a)::R(G)+K(F)
- B(d);P_SPINS(a),XP(B)::S(C),XB(d)
- S(a);N_GUARD,P_SPINB(d)::R(G)+K(F)
- S(a);P_SPINB(d),XB(D)::R(G)+K(F),XS(a)
- S(k);N_GUARD::S(E),XS(k)
- S(k);N_GUARD::S(E)
- P(g);OGATEB,XS(E)::QAB(J)
- Tries
- Try
- S(C);
- Threat
- B(I)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::R(G)+K(F),XB(d)
- S(a);P_SPINB(d),XB(D)::R(G)+K(F),XS(a)
- S(a);N_GUARD,P_SPINB(d)::R(G)+K(F)
- Refutation
- P(b);
- Try
- S(C);XP(h)
- Threat
- B(I)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::R(G)+K(F),XB(d)
- S(a);P_SPINB(d),XB(D)::R(G)+K(F),XS(a)
- S(a);N_GUARD,P_SPINB(d)::R(G)+K(F)
- Refutation
- P(b);
- Try
- B(I);
- Threat
- QAB1(J),XP(i)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- P(g);OGATEB,XS(E)::QAB(J)
- S(k);N_GUARD::S(E),XS(k)
- S(k);N_GUARD::S(E)
- Refutation
- S(a);P_SPINB(d),XB(D)
- Try
- Q(J);N_PINP(i),P_PINP(h)
- Threat
- QAR1(J),XP(h)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- S(k);N_GUARD,N_SPINP(h)::S(E)
- Refutation
- B(d);P_SPINS(a)
- Try
- Q(J);N_PINP(i)
- Threat
- QAR1(J),XP(h)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- S(k);XQ(J)::S(E),XS(k)
- Refutation
- B(d);P_SPINS(a)
- Try
- Q(J);N_PINP(i),P_PINP(h)
- Threat
- QAR1(J),XP(h)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- Refutation
- B(d);P_SPINS(a)
- Try
- Q(J);N_PINP(i)
- Threat
- QAR1(J),XP(h)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- Refutation
- B(d);P_SPINS(a)
- Try
- Q(J);N_PINP(i)
- Threat
- QAR1(J),XP(h)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::S(C),XB(d)
- Refutation
- B(d);P_SPINS(a)
- Try
- Actual
- S(C);
- Threat
- B(I)
- Vars
- B(d);CHECK,P_SPINS(a),XP(H)::R(G)+K(F),XB(d)
- B(d);N_GUARD,P_SPINS(a),XS(C)::R(G)+K(F)
- S(a);N_GUARD,P_SPINB(d),XS(C)::R(G)+K(F)
- S(a);P_SPINB(d),XB(D)::R(G)+K(F),XS(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).