MESON Chess Problem Database
Problem Display
PID: 15572 (nn2BBb1/N1b5/8/p1NkPR2/p2PRK2/8/P1Q5/8 w - - 0 1)
Sag, Andy
Saunders, Denis M
4th HM., The Problemist, 1985/II
#2
11 + 7
| 3936 | The Wizard of Oz | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Bxe5+
- 2.Rfxe5#
- 1...Bb6
- 2.e6#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sa6
- 2.Bc6#
- 1...Sc6
- 2.Bxc6#
- 1...a3
- 2.Qb3#
- 1...Bxe5+
- Tries
- 1.Sd3?
- 1...Bxe5+
- 2.Rfxe5#
- 1...Ke6
- 2.Qc4#
- 1...Be6
- 2.Qc5#
- 1...Bb6
- 2.e6#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...a3
- 2.Qb3#
- 1...Sb6!
- 1...Bxe5+
- 1.Sxa4?
- threat
- 2.Qb3#
- 1...Bxe5+
- 2.Rfxe5#
- 1...Ke6
- 2.Qb3#
- 2.Qc4#
- 1...Sb6!
- threat
- 1.Sb7?
- 1...Bxe5+
- 2.Rfxe5#
- 1...Ke6
- 2.Qc4#
- 1...Bb6
- 2.e6#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Be6
- 2.Qc5#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...a3
- 2.Qb3#
- 1...Sb6!
- 1...Bxe5+
- 1.Sd7?
- 1...Bxe5+
- 2.Rfxe5#
- 1...Ke6
- 2.Qc4#
- 1...Sxd7
- 2.Qc6#
- 1...Bb6
- 2.e6#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Be6
- 2.Sf6#
- 2.Qc5#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...a3
- 2.Qb3#
- 1...Sb6!
- 1...Bxe5+
- 1.Sc6?
- threat
- 2.Se7#
- 1...Bxe5+
- 2.Rexe5#
- 2.Rfxe5#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Sxc6!
- threat
- 1.Sc8?
- threat
- 2.Se7#
- 1...Bxe5+
- 2.Rfxe5#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Sc6!
- threat
- 1.Bxa4?
- threat
- 2.Bb3#
- 2.Qb3#
- 1...Bxe5+
- 2.Rfxe5#
- 1...Sb6!
- threat
- 1.Bb5?
- threat
- 2.Bc4#
- 2.Qc4#
- 1...Bxe5+
- 2.Rfxe5#
- 1...Sb6!
- threat
- 1.Qxa4?
- threat
- 2.Qb3#
- 1...Bxe5+
- 2.Rexe5#
- 2.Rfxe5#
- 1...Sb6!
- threat
- 1.a3?
- threat
- 2.Qa2#
- 1...Bxe5+
- 2.Rfxe5#
- 1...Sb6!
- threat
- 1.Sd3?
- Keys
- 1.Sa6!
- 1...Bxe5+
- 2.Rfxe5#
- 1...Ke6
- 2.Qc4#
- 1...Sxa6
- 2.Qc6#
- 1...Sb6
- 2.Sxc7#
- 1...Bb6
- 2.e6#
- 1...Bd6
- 2.exd6#
- 1...Bd8
- 2.e6#
- 1...Be6
- 2.Qc5#
- 1...Bf7
- 2.Bxf7#
- 1...Bh7
- 2.Bf7#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...a3
- 2.Qb3#
- 1...Bxe5+
- 1.Sa6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- B(d);N_PINP(G)::R(H)+P(G)
- B(d);::R(H)+P(G),XB(d)
- B(g);N_GUARD::B(J),XB(g)
- B(g);N_GUARD::B(J)
- S(f);N_GUARD::B(J)
- S(f);N_GUARD::B(J),XS(f)
- P(a);N_GUARD::QAB(B)
- Tries
- Try
- S(F);
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- K(c);S_FLIGHT::QAB(B)
- B(g);SBLOCK::QAR1(B)
- B(d);N_PINP(G)::R(H)+P(G)
- B(d);::R(H)+P(G),XB(d)
- B(g);N_GUARD::B(J),XB(g)
- B(g);N_GUARD::B(J)
- S(f);N_GUARD::QAB1(B)
- S(f);N_GUARD::QAB1(B),XS(f)
- P(a);N_GUARD::QAB(B)
- Refutation
- S(e);
- Try
- S(F);XP(a)
- Threat
- QAB(B)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- Refutation
- S(e);
- Try
- S(F);
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- K(c);S_FLIGHT::QAB(B)
- B(d);N_PINP(G)::R(H)+P(G)
- B(d);::R(H)+P(G),XB(d)
- B(g);SBLOCK::QAR1(B)
- B(g);N_GUARD::B(J),XB(g)
- B(g);N_GUARD::B(J)
- S(f);N_GUARD::QAB1(B)
- S(f);N_GUARD::QAB1(B),XS(f)
- P(a);N_GUARD::QAB(B)
- Refutation
- S(e);
- Try
- S(F);
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- K(c);S_FLIGHT::QAB(B)
- S(f);N_GUARD,XS(F)::QAB1(B)
- B(d);N_PINP(G)::R(H)+P(G)
- B(d);::R(H)+P(G),XB(d)
- B(g);N_GUARD::B(J),XB(g)
- B(g);N_GUARD::B(J)
- S(f);N_GUARD::QAB1(B)
- S(f);N_GUARD::QAB1(B),XS(f)
- P(a);N_GUARD::QAB(B)
- Refutation
- S(e);
- Try
- S(I);
- Threat
- S(I)
- Vars
- B(d);::R(H)+P(G),XB(d)
- B(d);N_PINP(G)::R(H)+P(G)
- Refutation
- S(f);XS(I)
- Try
- S(I);
- Threat
- S(I)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- B(d);::R(H)+P(G),XB(d)
- B(d);N_PINP(G)::R(H)+P(G)
- Refutation
- S(f);
- Try
- B(J);XP(a)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- Refutation
- S(e);
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- Refutation
- S(e);
- Try
- Q(B);XP(a)
- Threat
- QAB(B)
- Refutation
- S(e);
- Try
- P(A);
- Threat
- QAB(B)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- Refutation
- S(e);
- Try
- Actual
- S(F);
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::R1(H),XB(d)
- K(c);S_FLIGHT::QAB(B)
- S(f);N_GUARD,XS(F)::QAB1(B)
- S(e);N_GUARD::S(F),XB(d)
- B(d);N_PINP(G)::R(H)+P(G)
- B(d);::R(H)+P(G),XB(d)
- B(g);SBLOCK::QAR1(B)
- B(g);N_GUARD::B(J),XB(g)
- B(g);N_GUARD::B(J)
- S(f);N_GUARD::QAB1(B),XS(f)
- S(f);N_GUARD::QAB1(B)
- P(a);N_GUARD::QAB(B)
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).