MESON Chess Problem Database
Problem Display
PID: 176232 (4B3/BP3p2/K7/1Q6/Rp2p2b/3b4/2PpkNP1/3R3N w - - 0 1)
Cheylan, Yves
Schach-Echo, 1972
#2
11 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bc4
- 2.Qxc4#
- 1...Bxb5+
- 2.Bxb5#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...b3
- 2.Rxe4#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bc4
- Tries
- 1.Ka5?
- threat
- 2.Qh5#
- 1...Bxb5
- 2.Bxb5#
- 1...Bg5
- 2.Sg3#
- 1...f5
- 2.Bh5#
- 1...Bd8+!
- threat
- 1.Sxd3?
- threat
- 2.Sb2#
- 2.Sdf2#
- 2.Qh5#
- 1...exd3
- 2.Qh5#
- 1...Be1
- 2.Sb2#
- 2.Sdf2#
- 1...Bf2
- 2.Sb2#
- 2.Sdxf2#
- 2.Qh5#
- 1...Bg5
- 2.Sb2#
- 2.Sdf2#
- 1...f5
- 2.Sb2#
- 2.Sdf2#
- 2.Bh5#
- 1...Kxd1!
- threat
- 1.Bc5?
- 1...Bxb5+
- 2.Bxb5#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...b3
- 2.Rxe4#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.Bb6?
- 1...Bxb5+
- 2.Bxb5#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...b3
- 2.Rxe4#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.Bd7?
- threat
- 2.Bg4#
- 1...Bxb5+
- 2.Bxb5#
- 1...f5!
- threat
- 1.Rxb4?
- threat
- 2.Rxe4#
- 1...Bxb5+
- 2.Bxb5#
- 1...Bc4
- 2.Qxc4#
- 1...Bg5
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...Bxf2!
- threat
- 1.cxd3?
- threat
- 2.Qh5#
- 2.dxe4#
- 1...exd3
- 2.Qxd3#
- 2.Qe5#
- 2.Qh5#
- 1...Bg5
- 2.Sg3#
- 2.dxe4#
- 1...e3
- 2.Qh5#
- 2.d4#
- 1...f5
- 2.Bh5#
- 2.dxe4#
- 1...Bxf2!
- threat
- 1.c3?
- 1...Bxb5+
- 2.Bxb5#
- 1...bxc3
- 2.Rxe4#
- 1...b3
- 2.Rxe4#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.b8Q?
- 1...Bxb5+
- 2.Bxb5#
- 2.Qxb5#
- 1...b3
- 2.Rxe4#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.b8S?
- 1...Bxb5+
- 2.Bxb5#
- 1...b3
- 2.Rxe4#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.b8B?
- 1...Bxb5+
- 2.Bxb5#
- 1...b3
- 2.Rxe4#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.b8R?
- 1...Bxb5+
- 2.Bxb5#
- 1...b3
- 2.Rxe4#
- 1...Bc4
- 2.Qxc4#
- 1...Bg3
- 2.Sxg3#
- 1...Bg5
- 2.Sg3#
- 1...Bf6
- 2.Sg3#
- 1...Be7
- 2.Sg3#
- 1...Bd8
- 2.Sg3#
- 1...e3
- 2.Qxd3#
- 1...f5
- 2.Bh5#
- 1...f6
- 2.Bh5#
- 1...Bxf2!
- 1...Bxb5+
- 1.Ka5?
- Keys
- 1.c4!
- threat
- 2.Qh5#
- 1...Bxc4
- 2.Qxc4#
- 1...bxc4 ep
- 2.Rxe4#
- 1...Bg5
- 2.Sg3#
- 1...f5
- 2.Bh5#
- threat
- 1.c4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- B(c);::QAB(G),XB(c)
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(d);OGATE::R(F),XP(e)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Tries
- Try
- K(H);N_SPINQ(G),P-FLIGHT
- Threat
- QAB(G)
- Vars
- B(c);N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- B(f);N_GUARD::S(B)
- P(g);OGATE::B(K)
- Refutation
- B(f);CHECK
- Try
- S(D);N_SPINQ(G),XB(c)
- Threat
- DUALS(3)
- Vars
- P(e);P_SPINP(e),XS(D)::QAB(G)
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- B(I);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(d);OGATE::R(F),XP(e)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- B(I);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(d);OGATE::R(F),XP(e)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- B(K);
- Threat
- B(K)
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- Refutation
- P(g);
- Try
- R(F);XP(d)
- Threat
- R(F),XP(e)
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- P(C);N_SPINQ(G),XB(c)
- Threat
- DUALS(2)
- Refutation
- B(f);XS(D)
- Try
- P(C);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- P(d);OGATE,XP(C)::R(F),XP(e)
- P(d);OGATE::R(F),XP(e)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- P(J);
- Vars
- P(d);OGATE::R(F),XP(e)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- P(J);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- P(d);OGATE::R(F),XP(e)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- P(J);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- P(d);OGATE::R(F),XP(e)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- P(J);
- Vars
- B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(K),XB(c)
- P(d);OGATE::R(F),XP(e)
- B(c);::QAB(G),XB(c)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- P(e);N_GUARD::QAB1(G),XB(c)
- P(g);OGATE::B(K)
- Refutation
- B(f);XS(D)
- Try
- Actual
- P(C);N_PINB(c),N_SPINQ(G)
- Threat
- QAB(G)
- Vars
- B(c);OGATE,P_PINQ(G),P_SPINB(c),XP(C)::QAB(G),XB(c)
- P(d);EP,OGATE,P_PINQ(G),P_SPINB(c),XP(C)::R(F),XP(e)
- B(f);N_GUARD::S(B)
- P(g);OGATE::B(K)
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).