MESON Chess Problem Database
Problem Display
PID: 228918 (B2R4/1NK2N2/1p1B2Q1/P2k3r/2R2q2/8/2P1n3/8 w - - 0 1)
Cristoffanini, Guido
La Strategie, 1926
#2
10 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kxc4
- 2.Qd3#
- 1...Qc1
- 2.Qe4#
- 1...Qd2
- 2.Qe4#
- 1...Qh2
- 2.Qe4#
- 1...Qg3
- 2.Qe4#
- 1...Qg5
- 2.Qe4#
- 1...Qxd6+
- 2.Sbxd6#
- 1...Qh6
- 2.Qe4#
- 1...Qf1
- 2.Qe4#
- 1...Qf2
- 2.Qe4#
- 1...Qxc4+
- 2.Bc5#
- 1...Qe4
- 2.Qxe4#
- 1...Qf6
- 2.Qe4#
- 1...Qxf7+
- 2.Qxf7#
- 1...bxa5
- 2.Sxa5#
- 1...Kxc4
- Tries
- 1.Rb4?
- threat
- 2.Sc5#
- 2.Bxf4#
- 2.Be5#
- 1...Qxd6+
- 2.Rxd6#
- 2.Qxd6#
- 1...Qc4+
- 2.Bc5#
- 1...Qxf7+
- 2.Qxf7#
- 1...Qf6
- 2.Sc5#
- 2.Qe4#
- 1...Qc1
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qe4#
- 1...Qd2
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qe4#
- 1...Qh2
- 2.Sc5#
- 2.Bxh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Qe4#
- 1...Qe3
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 1...Qg3
- 2.Sc5#
- 2.Bxg3#
- 2.Bf4#
- 2.Be5#
- 2.Qe4#
- 1...Qe5
- 2.Sc5#
- 2.Bxe5#
- 1...Qg5
- 2.Sc5#
- 2.Be7#
- 2.Qe4#
- 1...Qh6
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qe4#
- 1...Qf1
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qe4#
- 1...Qf2
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qe4#
- 1...Qf3
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 1...Qd4
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 1...Qe4
- 2.Sc5#
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bf8#
- 2.Qxe4#
- 1...Qg4
- 2.Sc5#
- 1...Qh4
- 2.Sc5#
- 2.Be7#
- 1...Qf5
- 2.Sc5#
- 1...Re5
- 2.Sc5#
- 2.Bc5#
- 2.Bxe5#
- 2.Be7#
- 2.Bf8#
- 1...Rh8
- 2.Sc5#
- 1...Sd4
- 2.Bxf4#
- 2.Be5#
- 2.c4#
- 1...Qxb4!
- threat
- 1.Rc5+?
- 1...Kd4
- 2.Qd3#
- 1...bxc5!
- 1...Kd4
- 1.Qd3+?
- 1...Qd4
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Ke6!
- 1...Qd4
- 1.a6?
- threat
- 2.Sa5#
- 1...Qxd6+
- 2.Sbxd6#
- 1...Qxc4+
- 2.Bc5#
- 1...Qxf7+
- 2.Qxf7#
- 1...Kxc4
- 2.Qd3#
- 1...Qf6
- 2.Qe4#
- 1...Sd4!
- threat
- 1.Rb4?
- Keys
- 1.axb6!
- threat
- 2.Sa5#
- 1...Qxd6+
- 2.Sbxd6#
- 1...Qxc4+
- 2.Bc5#
- 1...Qxf7+
- 2.Qxf7#
- 1...Kxc4
- 2.Qd3#
- 1...Qf6
- 2.Qe4#
- 1...Sd4
- 2.Rc5#
- threat
- 1.axb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- K(c);S_FLIGHT,XR(B)::QAB1(E)
- Q(b);N_GUARD,N_PINB(D)::QAB1(E)
- Q(b);N_GUARD::QAB1(E)
- Q(b);CHECK,P_SPINQ(b),XB(D)::B(I)+S(F),XQ(b)
- Q(b);CHECK,N_PINB(D),SBLOCK,XR(B)::R(J)+B(D)
- Q(b);N_GUARD,N_PINB(D)::QAB1(E),XQ(b)
- Q(b);CHECK,N_PINB(D),OGATE,XS(H)::QAB(E),XQ(b)
- P(e);XP(C)::B(I)+S(F),XP(e)
- Tries
- Try
- R(B);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,N_PINB(D)::R(J)+B(D)
- Q(b);CHECK,N_PINB(D),OGATE,XS(H)::QAB(E),XQ(b)
- Q(b);N_PINB(D)::B(I)+S(F)
- R(d);::B(I)+S(F)
- Refutation
- Q(b);N_PINB(D),XR(B)
- Try
- R(B);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(E)
- Refutation
- P(e);XR(B)
- Try
- Q(E);CHECK
- Vars
- Q(b);N_PINB(D),P_SPINQ(b)::B(I)+S(F)
- S(a);P_SPINS(a)::B(I)+S(F)
- Refutation
- K(c);S_FLIGHT
- Try
- P(C);
- Threat
- B(I)+S(F)
- Vars
- Q(b);CHECK,P_SPINQ(b),XB(D)::B(I)+S(F),XQ(b)
- Q(b);CHECK,N_PINB(D),SBLOCK,XR(B)::R(J)+B(D)
- Q(b);CHECK,N_PINB(D),OGATE,XS(H)::QAB(E),XQ(b)
- K(c);S_FLIGHT,XR(B)::QAB1(E)
- Q(b);N_GUARD,N_PINB(D)::QAB1(E)
- Refutation
- S(a);
- Try
- Actual
- P(C);XP(e)
- Threat
- B(I)+S(F)
- Vars
- Q(b);CHECK,P_SPINQ(b),XB(D)::B(I)+S(F),XQ(b)
- Q(b);CHECK,N_PINB(D),SBLOCK,XR(B)::R(J)+B(D)
- Q(b);CHECK,N_PINB(D),OGATE,XS(H)::QAB(E),XQ(b)
- K(c);S_FLIGHT,XR(B)::QAB1(E)
- Q(b);N_GUARD,N_PINB(D)::QAB1(E)
- S(a);SBLOCK::R1(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).