MESON Chess Problem Database
Problem Display
PID: 157152 (3R4/4Q3/2Pp4/1pRrNp2/1NPk1n2/Bp3P2/3P4/5K2 w - - 0 1)
Cristoffanini, Guido
Il Secolo, 1925
#2
11 + 7
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...Rxe5
- 2.Qxe5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Se6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Kxc5
- Tries
- 1.Sed3?
- threat
- 2.Bb2#
- 2.Qe3#
- 1...Sxd3
- 2.Qe3#
- 1...bxc4
- 2.Qe3#
- 1...dxc5
- 2.Qxc5#
- 1...Re5
- 2.Bb2#
- 2.Qxe5#
- 1...Se2
- 2.Qe3#
- 1...Sg2
- 2.Bb2#
- 1...Se6
- 2.Bb2#
- 1...b2
- 2.Bxb2#
- 2.Qe3#
- 1...Rxc5!
- threat
- 1.Rd7?
- 1...Rxc5
- 2.Bb2#
- 1...Rxe5
- 2.Qxe5#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Kxc5!
- 1...Rxc5
- 1.Ra8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Rb8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Rc8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Re8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Rf8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Rg8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Rh8?
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se6
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Rxe5!
- 1...Kxc5
- 1.Qxd6?
- threat
- 2.Bb2#
- 1...bxc4
- 2.Rxc4#
- 1...Se2
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd3
- 2.Rxd5#
- 2.Qxd5#
- 1...b2
- 2.Sc2#
- 2.Bxb2#
- 1...Rxd6!
- threat
- 1.Qa7?
- threat
- 2.Bb2#
- 2.Rxd5#
- 1...Rxc5
- 2.Bb2#
- 1...Rxe5
- 2.Bb2#
- 1...bxc4
- 2.Rxd5#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Bb2#
- 1...Se2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...b2
- 2.Bxb2#
- 2.Rxd5#
- 1...Kxe5!
- threat
- 1.c7?
- threat
- 2.Sbc6#
- 1...Rxc5
- 2.Bb2#
- 1...Rxe5
- 2.Qxe5#
- 1...dxe5
- 2.Bb2#
- 1...Kxc5!
- threat
- 1.Sed3?
- Keys
- 1.Qg7!
- 1...Kxc5
- 2.Qa7#
- 1...Rxc5
- 2.Bb2#
- 1...Rxe5
- 2.Qxe5#
- 1...bxc4
- 2.Rxc4#
- 1...dxc5
- 2.Bb2#
- 1...dxe5
- 2.Qg1#
- 1...Se2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sh3
- 2.Rxd5#
- 1...Sh5
- 2.Rxd5#
- 1...Se6
- 2.Rxd5#
- 1...Sg6
- 2.Rxd5#
- 1...b2
- 2.Sc2#
- 1...Kxc5
- 1.Qg7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);P_SPINP(g),SBLOCK,XR(G)::B(C)
- R(e);OGATE,P_SPINP(g),XS(H)::QAB1(J),XR(e)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);P_SPINR(e),XR(G)::B(C)
- P(g);P_SPINR(e),XS(H)::B(C)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(c);XS(H)::QAB1(J)
- P(d);XP(F)::QAB1(J)
- P(g);OGATE,P_SPINR(e),XR(G)::QAB1(J),XP(g)
- S(c);::QAB1(J)
- S(c);::B(C)
- Refutation
- R(e);P_SPINP(g),XR(G)
- Try
- R(K);
- Vars
- R(e);P_SPINP(g),SBLOCK,XR(G)::B(C)
- R(e);OGATE,P_SPINP(g),XS(H)::QAB1(J),XR(e)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);P_SPINR(e),XR(G)::B(C)
- P(g);P_SPINR(e),XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- K(b);P_SPINP(g),S_FLIGHT,XR(G)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- R(K);
- Vars
- K(b);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB(J)
- R(e);SBLOCK,XR(G)::B(C)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);XR(G)::B(C)
- P(g);XS(H)::B(C)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
- Refutation
- R(e);XS(H)
- Try
- Q(J);P_PINR(e),XP(g)
- Threat
- B(C)
- Vars
- P(d);OGATE,XP(F)::R1(G),XP(d)
- Refutation
- R(e);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(e);P_SPINP(g),P_SPINR(e),XR(G)::B(C)
- R(e);P_SPINP(g),XS(H)::B(C)
- P(d);XP(F)::QAB(J)+R(G),DCHECK,XR(e)
- P(g);P_SPINP(g),P_SPINR(e),XR(G)::B(C)
- P(g);P_SPINR(e),SBLOCK,XS(H)::B(C)
- S(c);::QAB(J)+R(G),DCHECK,XR(e)
- Refutation
- K(b);P_SPINR(e),S_FLIGHT,XS(H)
- Try
- P(I);
- Threat
- S(E)
- Vars
- R(e);P_SPINP(g),SBLOCK,XR(G)::B(C)
- R(e);OGATE,P_SPINP(g),XS(H)::QAB1(J),XR(e)
- P(g);P_SPINR(e),XS(H)::B(C)
- Refutation
- K(b);P_SPINP(g),S_FLIGHT,XR(G)
- Try
- Actual
- Q(J);
- Vars
- K(b);OGATEB,S_FLIGHT,XR(G)::QAB(J)
- R(e);P_SPINP(g),SBLOCK,XR(G)::B(C)
- R(e);OGATE,P_SPINP(g),P_SPINR(e),XS(H)::QAB1(J),XR(e)
- P(d);OGATE,XP(F)::R1(G),XP(d)
- P(g);P_SPINR(e),SBLOCK,XR(G)::B(C)
- P(g);P_SPINP(g),P_SPINR(e),SBLOCK,XS(H)::QAB(J)
- S(c);N_GUARD::R1(G),XR(e)
- P(a);N_GUARD::S(E)
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).