MESON Chess Problem Database
Problem Display
PID: 197 (1N1b2N1/2R3P1/1p2kpQ1/1K1bP3/2p5/2BR1p2/B2P1P2/8 w - - 0 1)
Stocchi, Ottavio
1st HM., Lazard MT, 1950
#2
12 + 7
| 3100 | Selected Stocchi (I) | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.Rd6#
- 1...Bc6+
- 2.Rxc6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Bxc7
- 2.Qxf6#
- 1...Be7
- 2.Rxe7#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- Tries
- 1.Ka4?
- 1...Bc6+
- 2.Rxc6#
- 1...Bxc7
- 2.Qxf6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...b5+!
- 1...Bc6+
- 1.Kb4?
- 1...Be7+
- 2.Rxe7#
- 1...Bxc7
- 2.Qxf6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bc6
- 2.Rd6#
- 2.Rxc6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...b5!
- 1...Be7+
- 1.Sc6?
- threat
- 2.Sxd8#
- 1...Bxc6+
- 2.Rxc6#
- 1...Be7
- 2.Rxe7#
- 1...Bxc7!
- threat
- 1.Sd7?
- threat
- 2.Sf8#
- 1...Bc6+
- 2.Rxc6#
- 1...Be7!
- threat
- 1.Sxf6?
- threat
- 2.Qg4#
- 2.g8Q#
- 2.g8B#
- 1...Bxf6
- 2.Qg4#
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Bxc7
- 2.Sxd5#
- 2.Sg8#
- 1...cxd3
- 2.Bxd5#
- 2.Qg4#
- 2.g8Q#
- 2.g8B#
- 1...Be4
- 2.Rd6#
- 2.g8Q#
- 2.g8B#
- 1...Bb7
- 2.Rd6#
- 2.Qg4#
- 2.g8Q#
- 2.g8B#
- 1...Ba8
- 2.Rd6#
- 2.Qg4#
- 2.g8Q#
- 2.g8B#
- 1...Be7
- 2.g8Q#
- 2.g8B#
- 1...Bc6+!
- threat
- 1.Sh6?
- threat
- 2.Qf5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Bxc7
- 2.Qf7#
- 2.Qe8#
- 2.Qxf6#
- 1...cxd3
- 2.Qf5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Be4
- 2.Rd6#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Bb7
- 2.Rd6#
- 2.Qf5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Ba8
- 2.Rd6#
- 2.Qf5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Be7
- 2.Qf5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Bc6+!
- threat
- 1.Se7?
- threat
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Bxc7
- 2.Qxf6#
- 1...Bxe7
- 2.g8Q#
- 2.g8B#
- 1...cxd3
- 2.Bxd5#
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Be4
- 2.Rd6#
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Bb7
- 2.Rd6#
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Ba8
- 2.Rd6#
- 2.Qxf6#
- 2.g8Q#
- 2.g8B#
- 1...Bc6+!
- threat
- 1.Bb1?
- 1...Bc6+
- 2.Rxc6#
- 1...Bxc7
- 2.Qxf6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...cxd3!
- 1...Bc6+
- 1.Bb3?
- 1...Bc6+
- 2.Rxc6#
- 1...Bxc7
- 2.Qxf6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...cxb3!
- 1...Bc6+
- 1.Bxc4?
- threat
- 2.Bxd5#
- 2.Rc6#
- 1...Bxc7
- 2.Bxd5#
- 2.Qxf6#
- 1...Be7
- 2.Bxd5#
- 2.Rxe7#
- 1...Bxc4+!
- threat
- 1.Ba1?
- 1...Bc6+
- 2.Rxc6#
- 1...Bxc7
- 2.Qxf6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...c3!
- 1...Bc6+
- 1.Bb2?
- 1...Bc6+
- 2.Rxc6#
- 1...Bxc7
- 2.Qxf6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...c3!
- 1...Bc6+
- 1.Rxc4?
- threat
- 2.Rc6#
- 1...Bxc4+
- 2.Bxc4#
- 1...Bc6+
- 2.Rxc6#
- 1...Bc7
- 2.Qxf6#
- 1...Be7!
- threat
- 1.Rd7?
- threat
- 2.Rd6#
- 1...Be7
- 2.Rxe7#
- 1...Bc7
- 2.Re7#
- 2.Qxf6#
- 1...Bc6+!
- threat
- 1.Rc8?
- 1...Bc6+
- 2.Rxc6#
- 1...cxd3
- 2.Rc6#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...Bc7
- 2.Re8#
- 2.Qxf6#
- 1...Be7!
- 1...Bc6+
- 1.Qh5?
- 1...Bc6+
- 2.Rxc6#
- 1...cxd3
- 2.Rc6#
- 1...fxe5
- 2.Qxe5#
- 1...Be7
- 2.Rxe7#
- 1...Be4
- 2.Rd6#
- 1...Bb7
- 2.Rd6#
- 1...Ba8
- 2.Rd6#
- 1...f5
- 2.Qf7#
- 1...Bxc7!
- 1...Bc6+
- 1.Ka4?
- Keys
- 1.exf6!
- 1...Bc6+
- 2.Rxc6#
- 1...Kd6
- 2.Rc6#
- 1...Bxf6
- 2.Qxf6#
- 1...Bxc7
- 2.f7#
- 1...cxd3
- 2.Rc6#
- 1...Be7
- 2.fxe7#
- 1...Be4
- 2.Qxe4#
- 1...Bb7
- 2.Qg4#
- 1...Ba8
- 2.Qg4#
- 1...Bc6+
- 1.exf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- B(g);N_GUARD::R1(I),XB(g)
- P(b);P_SPINB(c),XR(E)::R(I)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- P(d);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- B(g);CHECK,N_GUARD::R1(I),XB(g)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- Refutation
- P(d);
- Try
- S(K);
- Threat
- S(K),XB(g)
- Vars
- B(c);CHECK,N_SPINP(f),OGATE,P_SPINP(b),XS(K)::R(I),XB(c)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- B(g);XR(I)
- Try
- S(K);
- Threat
- S(K)
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- Refutation
- B(g);
- Try
- S(L);XP(f)
- Threat
- DUALS(3)
- Vars
- B(g);::P=Q
- Refutation
- B(c);CHECK,P_SPINP(b)
- Try
- S(L);
- Threat
- DUALS(4)
- Refutation
- B(c);CHECK,N_SPINP(f),P_SPINP(b)
- Try
- S(L);
- Threat
- DUALS(3)
- Vars
- B(g);XR(I)::QAR1(H),XP(f)
- B(g);XS(L)::P=Q
- Refutation
- B(c);CHECK,N_SPINP(f),P_SPINP(b)
- Try
- B(A);
- Vars
- B(c);CHECK,N_GUARD::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- B(c);OGATE::R1(E)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);XR(E)
- Try
- B(A);
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);XB(A)
- Try
- B(A);P_PINB(c),XP(b)
- Threat
- DUALS(2)
- Refutation
- B(c);CHECK,N_SPINB(c),XB(A)
- Try
- B(D);
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);P_SPINB(c)
- Try
- B(D);
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- B(g);N_GUARD,XR(I)::QAR1(H),XP(f)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);P_SPINB(c)
- Try
- R(I);XP(b)
- Threat
- R(I)
- Vars
- B(c);CHECK,OGATE,P_SPINB(c),XR(I)::B(A),XB(c)
- B(c);CHECK::B(A)+R(I),DCHECK,XB(c)
- B(g);N_GUARD::QAR1(H),XP(f)
- Refutation
- B(g);
- Try
- R(I);
- Threat
- R1(I)
- Vars
- B(g);N_GUARD::R1(I),XB(g)
- Refutation
- B(c);CHECK,N_SPINP(f),P_SPINP(b)
- Try
- R(I);
- Vars
- B(c);CHECK,N_GUARD,N_SPINP(f),P_SPINP(b)::R(I),XB(c)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(c);N_SPINP(f),OGATE,P_SPINP(b)::R1(E)
- Refutation
- B(g);
- Try
- Q(H);N_PINP(f)
- Vars
- B(c);CHECK,N_GUARD,P_SPINP(b)::R(I),XB(c)
- P(b);P_SPINB(c),XR(E)::R(I)
- P(f);OGATE,XP(G)::QAR1(H),XP(f)
- B(g);N_GUARD::R1(I),XB(g)
- B(c);OGATE,P_SPINP(b)::R1(E)
- P(f);::QAB1(H)
- Refutation
- B(g);XR(I)
- Try
- Actual
- P(G);XP(f)
- Vars
- B(c);CHECK,N_GUARD,P_SPINP(b)::R(I),XB(c)
- K(e);P-FLIGHT,P_SPINB(c)::R1(I)
- B(g);OGATE,P_SPINB(g),XP(G)::QAR1(H),XB(g)
- B(g);N_GUARD,XR(I)::QAR(H)+P(G)
- P(b);P_SPINB(c),XR(E)::R(I)
- B(g);OGATE::QAR(H)+P(G),XB(g)
- B(c);N_GUARD,P_SPINP(b)::QAR2(H),XB(c)
- B(c);P_SPINP(b)::QAB(H)
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).