MESON Chess Problem Database
Problem Display
PID: 71719 (3K4/p2P2n1/PpR1bNQp/1p1Bk2P/1P2p3/1P2P2p/7P/8 w - - 0 1)
Cristoffanini, Guido
2nd Prize, Magyar Sakkvilag, 1929
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Bg4
- 2.Qxe4#
- 1...Bxd5
- 2.Sg4#
- 1...Bf5
- 2.Qg3#
- 1...Bxd7
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sf5
- 2.Rxe6#
- 1...Sxh5
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...Bg4
- Tries
- 1.Kc7?
- 1...Bxd5
- 2.Sg4#
- 1...Bxd7
- 2.Qxe4#
- 1...Sxh5
- 2.Rxe6#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qg3#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sf5
- 2.Rxe6#
- 1...Se8+!
- 1...Bxd5
- 1.Ke7?
- threat
- 2.Qxe4#
- 1...Bxd5
- 2.Sg4#
- 1...Bf5
- 2.Qg3#
- 1...Sf5+!
- threat
- 1.Kc8?
- 1...Bxd5
- 2.Sg4#
- 1...Sxh5
- 2.Rxe6#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qg3#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sf5
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...Bxd7+!
- 1...Bxd5
- 1.Sg4+?
- 1...Bxg4
- 2.Qxe4#
- 1...Kxd5!
- 1...Bxg4
- 1.Sh7?
- threat
- 2.Qxe4#
- 1...Bxd5
- 2.Qf6#
- 1...Bf5
- 2.Qd6#
- 1...Sf5
- 2.Qxe6#
- 1...Kxd5!
- threat
- 1.Se8?
- threat
- 2.Qxe4#
- 1...Bxd5
- 2.Qf6#
- 1...Sxe8
- 2.Qxe6#
- 1...Bf5
- 2.Qd6#
- 1...Sf5
- 2.Qxe6#
- 1...Kxd5!
- threat
- 1.Sg8?
- threat
- 2.Qxe4#
- 1...Bxd5
- 2.Qf6#
- 1...Bf5
- 2.Qd6#
- 1...Sf5
- 2.Qxe6#
- 1...Kxd5!
- threat
- 1.Bc4?
- 1...Bxc4
- 2.Qxe4#
- 1...Bxd7
- 2.Sxd7#
- 2.Qxe4#
- 1...Sxh5
- 2.Rxe6#
- 1...Bg4
- 2.Sxg4#
- 2.Qxe4#
- 1...Bd5
- 2.Sg4#
- 1...Bf5
- 2.Qg3#
- 1...Bf7
- 2.Sg4#
- 2.Qxe4#
- 1...Bg8
- 2.Sg4#
- 2.Qxe4#
- 1...Sf5
- 2.Sg4#
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...bxc4!
- 1...Bxc4
- 1.Rxb6?
- 1...Bxd5
- 2.Sg4#
- 1...Bxd7
- 2.Qxe4#
- 1...Sxh5
- 2.Rxe6#
- 1...Bg4
- 2.Qxe4#
- 1...Bf5
- 2.Qg3#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sf5
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...axb6!
- 1...Bxd5
- 1.Qg3+?
- 1...Kf5
- 2.Qf4#
- 1...Kxf6!
- 1...Kf5
- 1.Qg5+?
- 1...Bf5
- 2.Qf4#
- 2.Qg3#
- 1...Sf5
- 2.Rxe6#
- 1...hxg5!
- 1...Bf5
- 1.Qxh6?
- threat
- 2.Qf4#
- 1...Kf5
- 2.Qf4#
- 1...Sf5
- 2.Rxe6#
- 1...Sxh5!
- threat
- 1.Kc7?
- Keys
- 1.Rd6!
- 1...Kxd6
- 2.Qg3#
- 1...Bxd5
- 2.Sg4#
- 1...Bxd7
- 2.Sxd7#
- 1...Sxh5
- 2.Rxe6#
- 1...Bg4
- 2.Sxg4#
- 1...Bf5
- 2.Qg3#
- 1...Bf7
- 2.Sg4#
- 1...Bg8
- 2.Sg4#
- 1...Sf5
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...Kxd6
- 1.Rd6!
This is a version of 74372
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(f);::QAR1(J),XP(b)
- B(f);N_GUARD,SBLOCK,XB(E)::S(I)
- B(f);SBLOCK::QAB(J)
- B(f);XP(K)::QAR1(J),XP(b)
- S(i);N_GUARD::R1(H),XB(f)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- B(f);N_GUARD,SBLOCK,XB(E)::S(I)
- B(f);XP(K)::QAR1(J),XP(b)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- B(f);::QAR1(J),XP(b)
- B(f);SBLOCK::QAB(J)
- S(i);N_GUARD::R1(H),XB(f)
- Refutation
- S(i);CHECK
- Try
- K(L);S_FLIGHT
- Threat
- QAR1(J),XP(b)
- Vars
- B(f);N_GUARD,SBLOCK,XB(E)::S(I)
- B(f);SBLOCK::QAB(J)
- Refutation
- S(i);CHECK
- Try
- K(L);P-FLIGHT,P_SPINP(K)
- Vars
- B(f);N_GUARD,N_PINP(K),SBLOCK,XB(E)::S(I)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- B(f);::QAR1(J),XP(b)
- B(f);SBLOCK::QAB(J)
- B(f);N_PINP(K)::QAR1(J),XP(b)
- S(i);N_GUARD::R1(H),XB(f)
- Refutation
- B(f);CHECK,XP(K)
- Try
- S(I);CHECK
- Vars
- B(f);XS(I)::QAR1(J),XP(b)
- Refutation
- K(d);P-FLIGHT,XB(E)
- Try
- S(I);
- Threat
- QAR1(J),XP(b)
- Vars
- B(f);SBLOCK,XB(E)::QAB1(J)
- B(f);OGATE,SBLOCK::QAB1(J)
- S(i);N_GUARD::QAR1(J),XB(f)
- Refutation
- K(d);P-FLIGHT,XB(E)
- Try
- S(I);
- Threat
- QAR1(J),XP(b)
- Vars
- B(f);SBLOCK,XB(E)::QAB1(J)
- S(i);N_GUARD,XS(I)::QAR1(J),XB(f)
- B(f);OGATE,SBLOCK::QAB1(J)
- S(i);N_GUARD::QAR1(J),XB(f)
- Refutation
- K(d);P-FLIGHT,XB(E)
- Try
- S(I);
- Threat
- QAR1(J),XP(b)
- Vars
- B(f);SBLOCK,XB(E)::QAB1(J)
- B(f);OGATE,SBLOCK::QAB1(J)
- S(i);N_GUARD::QAR1(J),XB(f)
- Refutation
- K(d);P-FLIGHT,XB(E)
- Try
- B(E);
- Vars
- B(f);XB(E)::QAR1(J),XP(b)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- B(f);N_GUARD::S(I)
- B(f);SBLOCK::QAB(J)
- S(i);N_GUARD::R1(H),XB(f)
- Refutation
- P(c);XB(E)
- Try
- R(H);XP(e)
- Vars
- B(f);N_GUARD,SBLOCK,XB(E)::S(I)
- B(f);XP(K)::QAR1(J),XP(b)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- B(f);::QAR1(J),XP(b)
- B(f);SBLOCK::QAB(J)
- S(i);N_GUARD::R1(H),XB(f)
- Refutation
- P(h);XR(H)
- Try
- Q(J);CHECK
- Vars
- K(d);P-FLIGHT::QAR1(J)
- Refutation
- K(d);P_SPINB(f),S_FLIGHT,XS(I)
- Try
- Q(J);CHECK
- Vars
- S(i);P_SPINS(i)::R1(H),XB(f)
- Refutation
- P(g);XQ(J)
- Try
- Q(J);XP(g)
- Threat
- QAB1(J)
- Vars
- K(d);P-FLIGHT::QAR1(J)
- S(i);N_GUARD,SBLOCK::R1(H),XB(f)
- Refutation
- S(i);XP(F)
- Try
- Actual
- R(H);
- Vars
- K(d);S_FLIGHT,XR(H)::QAB(J)
- B(f);N_GUARD,XB(E)::S(I)
- B(f);XP(K)::S(I),XB(f)
- S(i);N_GUARD,XP(F)::R1(H),XB(f)
- B(f);N_GUARD::S(I),XB(f)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::S(I)
- S(i);N_GUARD::R1(H),XB(f)
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).