MESON Chess Problem Database
Problem Display
PID: 41813 (1n6/2bPQRpB/1p2Pr2/2p1k3/5N2/1q1R1KPb/5Np1/3n2B1 w - - 0 1)
Foth, J
De Problemist, 1930
#2
11 + 11
| 35 | L'Italia Scacchistica | 1930 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Rd5#
- 1...Qa4
- 2.Rd5#
- 1...Qd5+
- 2.Rxd5#
- 1...Qxe6
- 2.Rd5#
- 1...Qb1
- 2.Rd5#
- 1...Qb2
- 2.Rd5#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qb4
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Rxf4+
- 2.gxf4#
- 1...Rxe6
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Bg4+
- 2.Sxg4#
- 1...Bxe6
- 2.Sg4#
- 1...Bd6
- 2.Qxd6#
- 1...Bd8
- 2.Qd6#
- 1...g5
- 2.Qxf6#
- 1...g6
- 2.Qxf6#
- 1...Qc2
- Tries
- 1.Rxf6?
- threat
- 2.Sg6#
- 1...Qd5+
- 2.Rxd5#
- 1...Qxd3+
- 2.S2xd3#
- 1...Bg4+
- 2.Sxg4#
- 1...Bf5
- 2.Rxf5#
- 1...g6
- 2.Sxg6#
- 1...gxf6!
- threat
- 1.Qxc5+?
- 1...Qd5+
- 2.Rxd5#
- 2.Qxd5#
- 1...bxc5!
- 1...Qd5+
- 1.d8Q?
- threat
- 2.Qdxc7#
- 2.Qexc7#
- 1...Qd5+
- 2.Rxd5#
- 2.Qxd5#
- 1...Qxd3+
- 2.Sxd3#
- 1...Rxf4+
- 2.gxf4#
- 1...Bg4+
- 2.Sxg4#
- 1...Qxe6
- 2.Rd5#
- 2.Qdxc7#
- 2.Qd5#
- 1...Rxe6
- 2.Sg6#
- 2.Qdxc7#
- 1...Rxf7
- 2.Qdxc7#
- 1...Bxd8
- 2.Qd6#
- 1...g6
- 2.Qxf6#
- 1...Bd6
- 2.Qexd6#
- 2.Qdxd6#
- 1...Sd7
- 2.Qxc7#
- 1...Sa6!
- threat
- 1.d8B?
- threat
- 2.Bxc7#
- 2.Qxc7#
- 1...Qd5+
- 2.Rxd5#
- 1...Qxd3+
- 2.Sxd3#
- 1...Rxf4+
- 2.gxf4#
- 1...Bg4+
- 2.Sxg4#
- 1...Qxe6
- 2.Bxc7#
- 2.Rd5#
- 1...Rxe6
- 2.Sg6#
- 2.Bxc7#
- 1...Rxf7
- 2.Bxc7#
- 1...Bxd8
- 2.Qd6#
- 1...g6
- 2.Qxf6#
- 1...Bd6
- 2.Qxd6#
- 1...Sd7
- 2.Bxc7#
- 1...Sa6!
- threat
- 1.Rxf6?
- Keys
- 1.d8S!
- threat
- 2.Qxc7#
- 1...Qd5+
- 2.Rxd5#
- 1...Qxd3+
- 2.Sxd3#
- 1...Rxf4+
- 2.gxf4#
- 1...Bg4+
- 2.Sxg4#
- 1...Qxe6
- 2.Rd5#
- 1...Rxe6
- 2.Sg6#
- 1...Rxf7
- 2.Sxf7#
- 1...Bxd8
- 2.Qd6#
- 1...g6
- 2.Qxf6#
- 1...Bd6
- 2.Qxd6#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- threat
- 1.d8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(c);N_PINR(C)::R1(C)
- Q(c);CHECK,N_PINR(C)::R1(C),XQ(c)
- Q(c);N_PINR(C),P_SPINQ(c),XP(G)::R1(C)
- Q(c);CHECK,XR(C)::S(B),XQ(c)
- R(h);CHECK,OGATE,XS(F)::P(E),XR(h)
- R(h);N_PINS(F),P_SPINR(h),XP(G)::S(F)
- R(h);N_PINS(F)::S(F),XR(h)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- B(d);N_GUARD,P_SPINB(d),XP(G)::S(B)
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB1(I)
- P(j);N_GUARD::QAB1(I),XR(h)
- Tries
- Try
- R(J);N_SPINS(F),XR(h)
- Threat
- S(F)
- Vars
- Q(c);CHECK,N_PINR(C)::R1(C),XQ(c)
- Q(c);CHECK,XR(C)::S(B),XQ(c)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- B(d);N_GUARD::R1(J),XB(d)
- P(j);::S(F),XP(j)
- Refutation
- P(j);XR(J)
- Try
- Q(I);CHECK,XP(e)
- Refutation
- P(g);XQ(I)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,XR(C)::S(B),XQ(c)
- R(h);CHECK,OGATE,XS(F)::P(E),XR(h)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- R(h);XR(J)::QAB(H),XB(i)
- B(i);N_GUARD,XQ(H)::QAB1(I)
- P(j);N_GUARD::QAB1(I),XR(h)
- S(k);::QAB(H),XB(i)
- Refutation
- S(k);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_PINR(C)::R1(C),XQ(c)
- Q(c);CHECK,XR(C)::S(B),XQ(c)
- R(h);CHECK,OGATE,XS(F)::P(E),XR(h)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- R(h);XR(J)::B(H),XB(i)
- B(i);N_GUARD,XB(H)::QAB1(I)
- P(j);N_GUARD::QAB1(I),XR(h)
- B(i);N_GUARD::QAB1(I),XB(i)
- S(k);::B(H),XB(i)
- Refutation
- S(k);
- Try
- Actual
- P(H);
- Threat
- QAB(I),XB(i)
- Vars
- Q(c);CHECK,N_PINR(C)::R1(C),XQ(c)
- Q(c);CHECK,XR(C)::S(B),XQ(c)
- R(h);CHECK,OGATE,XS(F)::P(E),XR(h)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- Q(c);N_PINR(C),P_SPINQ(c),XP(G)::R1(C)
- R(h);N_PINS(F),P_SPINR(h),XP(G)::S(F)
- R(h);XR(J)::S(H),XR(h)
- B(i);N_GUARD,XS(H)::QAB1(I)
- P(j);N_GUARD::QAB1(I),XR(h)
- B(i);N_GUARD::QAB1(I),XB(i)
- S(k);N_GUARD::S(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).