MESON Chess Problem Database
Problem Display
PID: 71340 (1N1B2bq/p3pPnp/Pp1k3N/3P4/1PPR1P2/3P2p1/6K1/8 w - - 0 1)
Boros, Sandor
Magyar Sakkvilag, 1925
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...Bxf7
- Tries
- 1.Kf1?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...g2+!
- 1...Bxf7
- 1.Kg1?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...g2!
- 1...Bxf7
- 1.Kh1?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...g2+!
- 1...Bxf7
- 1.Kf3?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...g2!
- 1...Bxf7
- 1.Kxg3?
- 1...Sf5+
- 2.Sxf5#
- 1...Bxf7
- 2.Sxf7#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...Sh5+!
- 1...Sf5+
- 1.Kh3?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 2.fxe8S#
- 1...b5
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...g2!
- 1...Bxf7
- 1.Bxb6?
- threat
- 2.c5#
- 1...e5
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...Se6
- 2.Sf5#
- 1...axb6!
- threat
- 1.Re4?
- 1...Bxf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 2.Re6#
- 1...Sh5
- 2.Sf5#
- 2.Re6#
- 1...Se6
- 2.Sf5#
- 2.Rxe6#
- 1...Se8
- 2.Sf5#
- 2.Re6#
- 2.fxe8S#
- 1...e5
- 2.fxe5#
- 2.f8Q#
- 2.f8B#
- 1...e6
- 2.f8Q#
- 2.f8B#
- 1...b5!
- 1...Bxf7
- 1.f8Q?
- threat
- 2.Qxe7#
- 1...Sf5
- 2.Sxf5#
- 1...Bxd5+!
- threat
- 1.f8B?
- threat
- 2.Bfxe7#
- 1...Sf5
- 2.Sxf5#
- 1...Bxd5+!
- threat
- 1.Kf1?
- Keys
- 1.f8S!
- 1...Bxd5+
- 2.Rxd5#
- 1...Be6
- 2.dxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...b5
- 2.c5#
- 1...e5
- 2.dxe5 ep#
- 1...e6
- 2.dxe6#
- 1...Bxd5+
- 1.f8S!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- P(a);
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- S(f);CHECK,N_GUARD::S(I),XS(f)
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- S(f);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- B(h);XP(J)::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);::P=Q
- Refutation
- P(a);
- Try
- B(L);XP(b)
- Threat
- P(D)
- Vars
- P(e);::P=Q
- S(f);N_GUARD::S(I)
- Refutation
- P(d);XB(L)
- Try
- R(E);
- Vars
- B(h);XP(J)::S(I),XB(h)
- P(e);::P=Q
- Refutation
- P(b);
- Try
- P(J);P_PINP(e)
- Threat
- QAB1(J),XP(e)
- Vars
- S(f);N_GUARD::S(I),XS(f)
- Refutation
- B(h);CHECK,P_SPINB(h),XP(G)
- Try
- P(J);P_PINP(e)
- Threat
- B(J),XP(e)
- Vars
- S(f);N_GUARD::S(I),XS(f)
- Refutation
- B(h);CHECK,P_SPINB(h),XP(G)
- Try
- Actual
- P(J);
- Vars
- B(h);CHECK,OGATE,P_SPINB(h),XP(G)::R1(E),XB(h)
- B(h);OGATE::R(E)+P(G),XB(h)
- B(h);N_GUARD::S(I),XB(h)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- P(b);N_GUARD::P(D)
- P(e);OGATE::R(E)+P(G),XP(e),EP
- P(e);OGATE::R(E)+P(G),XP(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).