MESON Chess Problem Database
Problem Display
PID: 264484 (b4q2/4n1BB/R4Np1/rQ2nkN1/3pR1pP/3P2P1/8/b6K w - - 0 1)
Simoni, Francesco
The Problemist, 1992
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxf6
- 2.Rxf6#
- 1...Ra2
- 2.Qxe5#
- 1...Ra3
- 2.Qxe5#
- 1...Ra4
- 2.Qxe5#
- 1...Rxa6
- 2.Qxe5#
- 1...Bxe4+
- 2.dxe4#
- 1...Sc6
- 2.Rf4#
- 1...Qxf6
- Tries
- 1.Kg1?
- threat
- 2.Rf4#
- 2.Rxe5#
- 1...Qxf6
- 2.Rf4#
- 2.Rxf6#
- 1...Rxb5
- 2.Rf4#
- 1...Bxe4
- 2.dxe4#
- 1...Qb8
- 2.Rf4#
- 1...Bd5
- 2.Rf4#
- 1...Sc6
- 2.Rf4#
- 1...Sd5!
- threat
- 1.Sf3?
- threat
- 2.Rf4#
- 2.Rxe5#
- 1...Qxf6
- 2.Rf4#
- 2.Rxf6#
- 1...Rxb5
- 2.Rf4#
- 1...Rxa6
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxe4
- 2.dxe4#
- 1...Bc6
- 2.Rxe5#
- 1...Sd5
- 2.Rxe5#
- 1...Qb8
- 2.Rf4#
- 1...Sc6!
- threat
- 1.Sd5?
- threat
- 2.Rf4#
- 2.Rxe5#
- 1...Qxg7
- 2.Rf4#
- 1...Sxd3
- 2.Se3#
- 2.Sxe7#
- 2.Qd7#
- 1...Sxd5
- 2.Rxe5#
- 1...Qf6
- 2.Rf4#
- 2.Rxf6#
- 1...Qb8
- 2.Sxe7#
- 2.Rf4#
- 2.Rf6#
- 1...Sf3
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 2.Qd7#
- 1...Sc4
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 2.Qd7#
- 1...S5c6
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 1...Sd7
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 2.Qxd7#
- 1...Sf7
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 2.Rf6#
- 2.Qd7#
- 1...S7c6
- 2.Rf4#
- 1...Bxd5!
- threat
- 1.Sg8?
- threat
- 2.Sh6#
- 1...Bxe4+
- 2.dxe4#
- 1...Qxg8
- 2.Rf6#
- 1...Sxg8
- 2.Bxg6#
- 1...Qxg7!
- threat
- 1.Kg1?
- Keys
- 1.Se8!
- threat
- 2.Sd6#
- 1...Bxe4+
- 2.dxe4#
- 1...Qxg7
- 2.Sxg7#
- 1...Qxe8
- 2.Rf6#
- 1...Rxa6
- 2.Qxe5#
- 1...Sd5
- 2.Rxe5#
- 1...Qf6
- 2.Rxf6#
- 1...Sc6
- 2.Rf4#
- 1...Sc8
- 2.Bxg6#
- 1...Sg8
- 2.Bxg6#
- threat
- 1.Se8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- Q(j);OGATE,XS(I)::R1(H),XQ(j)
- R(d);N_GUARD::QAR1(F),XS(e)
- R(d);N_GUARD,XR(H)::QAR1(F),XS(e)
- B(i);CHECK,OGATE,XR(D)::P(B),XB(i)
- S(h);N_PINR(D)::R1(D)
- Tries
- Try
- K(A);N_SPINR(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINS(e),XQ(F)::R1(D)
- B(i);OGATE,XR(D)::P(B),XB(i)
- Q(j);::R1(D)
- B(i);N_SPINS(e)::R1(D)
- S(h);::R1(D)
- Refutation
- S(h);N_SPINS(e)
- Try
- S(G);N_SPINR(D)
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINS(e),XQ(F)::R1(D)
- B(i);OGATE,P_PINS(G),XR(D)::P(B),XB(i)
- B(i);::R1(D),XS(e)
- S(h);N_SPINS(e)::R1(D),XS(e)
- Q(j);::R1(D)
- Refutation
- S(h);
- Try
- S(I);N_PINS(e),N_SPINR(D)
- Threat
- DUALS(2)
- Vars
- Q(j);XB(J)::R1(D)
- S(h);XS(I)::R1(D),XS(e)
- S(h);::R1(D)
- Refutation
- B(i);P_PINR(D),XS(I)
- Try
- S(I);
- Threat
- S(I)
- Vars
- B(i);CHECK,OGATE,XR(D)::P(B),XB(i)
- Q(j);N_GUARD,XS(I)::R1(H)
- S(h);N_GUARD,XS(I)::B(K),XP(g)
- Refutation
- Q(j);XB(J)
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- B(i);CHECK,OGATE,XR(D)::P(B),XB(i)
- Q(j);XB(J)::S(I),XQ(j)
- Q(j);N_GUARD,XS(I)::R1(H)
- R(d);N_GUARD,XR(H)::QAR1(F),XS(e)
- S(h);N_PINR(D),N_SPINS(e)::R1(D),XS(e)
- Q(j);N_GUARD::R1(H),XQ(j)
- S(h);N_PINR(D)::R1(D)
- S(h);N_GUARD::B(K),XP(g)
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).