MESON Chess Problem Database
Problem Display
PID: 63676 (1nQN4/3q2P1/3P1pPK/3P1k1B/1R6/3p4/1Bb1Prr1/7n w - - 0 1)
Ireland, Alfred H
Chess Amateur (The), 1909
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Rg4
- 2.Bxg4#
- 1...Rxg6+
- 2.Bxg6#
- 1...Sg3
- 2.Bg4#
- 1...Sa6
- 2.Qxd7#
- 1...Sc6
- 2.Qxd7#
- 1...dxe2
- 2.Qxc2#
- 1...d2
- 2.Qxc2#
- 1...Qe6
- Tries
- 1.Sc6?
- threat
- 2.Se7#
- 1...Rxg6+
- 2.Bxg6#
- 1...Sxc6
- 2.Qxd7#
- 1...Rxe2!
- threat
- 1.g8S?
- threat
- 2.Se7#
- 1...Rxg6+
- 2.Bxg6#
- 1...Sc6
- 2.Qxd7#
- 1...Rxe2!
- threat
- 1.Sc6?
- Keys
- 1.Se6!
- threat
- 2.e4#
- 1...Qxg7+
- 2.Sxg7#
- 1...Rxg6+
- 2.Bxg6#
- 1...Qxe6
- 2.Qxe6#
- 1...Rxe2
- 2.Rf4#
- 1...dxe2
- 2.Qxc2#
- 1...Rf4
- 2.Rxf4#
- 1...Rg4
- 2.Bxg4#
- 1...Sg3
- 2.Bg4#
- 1...d2
- 2.Qxc2#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(h);OGATE::QAB1(J),XQ(h)
- R(d);N_GUARD::B(E),XR(d)
- R(d);CHECK,OGATE,XP(G)::B(E),XR(d)
- S(a);S_CUTR(d)::B(E)
- S(i);N_GUARD::QAB(J),XQ(h)
- P(e);OGATEB,XP(B)::QAB(J),XB(b)
- P(e);OGATEB::QAB(J),XB(b)
- Tries
- Try
- S(K);
- Threat
- S(K)
- Vars
- R(d);CHECK,OGATE,XP(G)::B(E),XR(d)
- S(i);N_GUARD,XS(K)::QAB(J),XQ(h)
- Refutation
- R(c);XP(B)
- Try
- P(I);
- Threat
- S(I)
- Vars
- R(d);CHECK,OGATE,XP(G)::B(E),XR(d)
- S(i);N_GUARD::QAB(J),XQ(h)
- Refutation
- R(c);XP(B)
- Try
- Actual
- S(K);N_PINQ(h)
- Threat
- P(B)
- Vars
- Q(h);CHECK,XP(I)::QAB(J)+S(K),DCHECK,XQ(h)
- R(d);CHECK,OGATE,XP(G)::B(E),XR(d)
- Q(h);OGATE,P_SPINQ(h),XS(K)::QAB1(J),XQ(h)
- R(c);N_GUARD,XP(B)::R1(C)
- P(e);OGATEB,XP(B)::QAB(J),XB(b)
- R(c);N_GUARD::R1(C),XR(c)
- R(d);N_GUARD::B(E),XR(d)
- S(a);S_CUTR(d)::B(E)
- P(e);OGATEB::QAB(J),XB(b)
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).