MESON Chess Problem Database
Problem Display
PID: 272063 (5n2/2qB1NR1/3pbr1p/5k1P/R4B1P/1Q2n3/KP1pr1p1/4b2N w - - 0 1)
Caine, Walter Edmund
The Problemist, 1957
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sxd6#
- 1...Qd8
- 2.Sxd6#
- 1...Qc1
- 2.Sxd6#
- 1...Qc2
- 2.Sxd6#
- 1...Qc3
- 2.Sxd6#
- 1...Qa7
- 2.Sxd6#
- 1...Qb7
- 2.Sxd6#
- 1...Qc8
- 2.Sxd6#
- 1...Rf2
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Sd5
- 2.Qh3#
- 1...Sg6
- 2.Sxh6#
- 1...d5
- 2.Qd3#
- 1...Qa5
- Tries
- 1.Bxe6+?
- 1...Sxe6
- 2.Qd3#
- 1...Rxe6!
- 1...Sxe6
- 1.Bxe6+?
- Keys
- 1.Bh2!
- threat
- 2.Rf4#
- 1...Rxf7
- 2.Rxf7#
- 1...Qc4
- 2.Sxd6#
- 1...Sc4
- 2.Qf3#
- 1...Qa5
- 2.Sxd6#
- 1...Qa7
- 2.Sxd6#
- 1...Rf2
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Sd5
- 2.Qh3#
- 1...Sg6
- 2.Sxh6#
- 1...d5
- 2.Qd3#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(k);N_GUARD,P_PINR(E)::S(J),XP(g)
- Q(k);N_GUARD::S(J),XP(g)
- Q(k);N_GUARD,P_PINP(C)::S(J),XP(g)
- R(c);S_CUTB(a)::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(e);N_PINQ(D)::QAB(D)
- S(l);S_CUTR(i)::S(J),XP(j)
- P(g);N_PINQ(D)::QAB(D)
- Tries
- Try
- B(I);CHECK,N_SPINQ(D),XB(h)
- Vars
- S(l);SBLOCK,XB(I)::QAB(D)
- Refutation
- R(i);XB(I)
- Try
- Actual
- B(F);
- Threat
- R1(E)
- Vars
- R(i);OGATE,XS(J)::R(K),XR(i)
- Q(k);N_GUARD::S(J),XP(g)
- S(e);N_PINQ(D)::QAR2(D)
- Q(k);N_GUARD,P_PINR(E)::S(J),XP(g)
- R(c);S_CUTB(a)::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(e);N_PINQ(D)::QAB(D)
- S(l);S_CUTR(i)::S(J),XP(j)
- P(g);N_PINQ(D)::QAB(D)
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).