MESON Chess Problem Database
Problem Display
PID: 161042 (8/P7/3Bp2b/2KP4/2QNk1Pp/p3qp2/2rRn3/1B1bRN2 w - - 0 1)
Salamanca, Tomas
Good Companions, 1923
#2
11 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4+
- 2.Rxd4#
- 1...Qf4
- 2.Sxc2#
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Sxe6#
- 1...Qg5
- 2.Sxc2#
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Sxe6#
- 1...Qb3
- 2.Sxb3#
- 1...Sc3
- 2.Qd3#
- 1...Sxd4
- 2.Rxd4#
- 1...Sf4
- 2.Rxe3#
- 1...Qxd4+
- Tries
- 1.Bxc2+?
- 1...Qd3
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Sxe6#
- 2.Bxd3#
- 2.Qxd3#
- 1...Bxc2!
- 1...Qd3
- 1.Qxc2+?
- 1...Qd3
- 2.Qxd3#
- 1...Bxc2!
- 1...Qd3
- 1.a8Q?
- threat
- 2.dxe6#
- 1...Qxd4+
- 2.Rxd4#
- 1...exd5
- 2.Qxd5#
- 2.Qe8#
- 1...Qg5
- 2.Sxc2#
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Sxe6#
- 1...Qb3
- 2.Sxb3#
- 1...Sc3
- 2.Qd3#
- 1...Sf4
- 2.Rxe3#
- 1...e5!
- threat
- 1.a8B?
- threat
- 2.dxe6#
- 1...Qxd4+
- 2.Rxd4#
- 1...exd5
- 2.Bxd5#
- 1...Qg5
- 2.Sxc2#
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Sxe6#
- 1...Qb3
- 2.Sxb3#
- 1...Sc3
- 2.Qd3#
- 1...Sf4
- 2.Rxe3#
- 1...e5!
- threat
- 1.Bxc2+?
- Keys
- 1.dxe6!
- threat
- 2.a8Q#
- 2.a8B#
- 1...Qxd4+
- 2.Rxd4#
- 1...Qg5+
- 2.Sf5#
- 1...Qxd2
- 2.a8Q#
- 2.a8B#
- 1...Sxd4
- 2.Rxd4#
- 2.a8Q#
- 2.a8B#
- 1...Qg1
- 2.a8Q#
- 2.a8B#
- 1...Qf2
- 2.a8Q#
- 2.a8B#
- 1...Qf4
- 2.Sxc2#
- 2.Sxe2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.a8Q#
- 2.a8B#
- 1...Qb3
- 2.Sxb3#
- 1...Qc3
- 2.a8Q#
- 2.a8B#
- 1...Qd3
- 2.a8Q#
- 2.a8B#
- 1...Bf4
- 2.a8Q#
- 2.a8B#
- 1...Bg5
- 2.a8Q#
- 2.a8B#
- 1...Bg7
- 2.a8Q#
- 2.a8B#
- 1...Bf8
- 2.a8Q#
- 2.a8B#
- 1...Sc1
- 2.a8Q#
- 2.a8B#
- 1...Sg1
- 2.a8Q#
- 2.a8B#
- 1...Sc3
- 2.Qd3#
- 1...Sg3
- 2.a8Q#
- 2.a8B#
- 1...Sf4
- 2.Rxe3#
- 1...a2
- 2.a8Q#
- 2.a8B#
- 1...f2
- 2.a8Q#
- 2.a8B#
- 1...h3
- 2.a8Q#
- 2.a8B#
- threat
- 1.dxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(c),XS(F)::R1(D),XQ(e)
- Q(e);N_PINS(F),P_SPINS(c)::QAR(E)+S(F),XQ(e)
- S(c);N_PINQ(E),P_SPINQ(e)::QAB1(E)
- S(c);OGATE,P_SPINQ(e),P_SPINS(c),XS(F)::R1(D),XS(c)
- S(c);OGATE,P_SPINQ(e)::R1(B),XQ(e)
- Tries
- Try
- B(A);CHECK,N_SPINQ(E),XR(b)
- Refutation
- B(a);XB(A)
- Try
- Q(E);CHECK,N_SPINQ(E),XR(b)
- Vars
- Q(e);N_GUARD,N_PINS(F),P_SPINQ(e),P_SPINS(c)::QAB1(E),XQ(e)
- Refutation
- B(a);P_SPINB(a),XQ(E)
- Try
- P(K);
- Threat
- QAB(K)+P(I),XP(i)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(c),XS(F)::R1(D),XQ(e)
- Q(e);N_PINS(F),P_SPINS(c)::QAR(E)+S(F),XQ(e)
- S(c);N_PINQ(E),P_SPINQ(e)::QAB1(E)
- S(c);OGATE,P_SPINQ(e)::R1(B),XQ(e)
- Refutation
- P(i);
- Try
- P(K);
- Threat
- B(K)+P(I),XP(i)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(c),XS(F)::R1(D),XQ(e)
- P(i);OGATE,P_SPINP(i),XP(I)::B(K),XP(i)
- Q(e);N_PINS(F),P_SPINS(c)::QAR(E)+S(F),XQ(e)
- S(c);N_PINQ(E),P_SPINQ(e)::QAB1(E)
- S(c);OGATE,P_SPINQ(e)::R1(B),XQ(e)
- Refutation
- P(i);
- Try
- Actual
- P(I);XP(i)
- Threat
- P=Q
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(c),XS(F)::R1(D),XQ(e)
- Q(e);CHECK,N_PINS(F),P_SPINS(c)::QAR(E)+S(F)
- Q(e);N_PINS(F),P_SPINS(c),XR(D)::P=Q
- Q(e);P_SPINS(c)::P=Q
- Q(e);N_PINS(F),P_SPINS(c)::QAR(E)+S(F),XQ(e)
- Q(e);N_PINS(F),P_SPINS(c)::P=Q
- Q(e);N_PINS(F),N_SPINR(b),P_SPINS(c)::P=Q
- B(j);::P=Q
- B(j);P_PINB(J)::P=Q
- S(c);P_SPINQ(e)::P=Q
- S(c);N_PINQ(E),P_SPINQ(e)::QAB1(E)
- S(c);OGATE,P_SPINQ(e)::R1(B),XQ(e)
- P(d);::P=Q
- P(f);::P=Q
- P(h);::P=Q
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).