MESON Chess Problem Database
Problem Display
PID: 21258 (2n5/3Qp3/1p1N1P2/1Ppk4/N7/8/3p1K2/B4R2 w - - 0 1)
Blake, Percy Francis
Good Companions (April), 1917
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Sa7
- 2.Sxb6#
- 1...d1Q
- 2.Rxd1#
- 1...d1S+
- 2.Rxd1#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...e6
- 2.Qc6#
- 1...Sa7
- Tries
- 1.Qf5+?
- 1...e5
- 2.Qxe5#
- 1...Kxd6!
- 1...e5
- 1.Qb7+?
- 1...Kxd6
- 2.Qc6#
- 1...Ke6!
- 1...Kxd6
- 1.Qxe7?
- threat
- 2.Qe5#
- 1...d1S+
- 2.Rxd1#
- 1...Sxd6
- 2.Sxb6#
- 1...Sxe7!
- threat
- 1.Qf5+?
- Keys
- 1.Ke3!
- 1...d1S+
- 2.Rxd1#
- 1...Sxd6
- 2.Sxb6#
- 1...exd6
- 2.Qf7#
- 1...exf6
- 2.Rf5#
- 1...d1Q
- 2.Rxd1#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 1...Sa7
- 2.Sxb6#
- 1...c4
- 2.Sxc8#
- 1...e5
- 2.Sc3#
- 1...e6
- 2.Qc6#
- 1...d1S+
- 1.Ke3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(f);N_GUARD::S(D),XP(d)
- P(a);OGATEB::R(B),XQ(a)
- P(a);CHECK,OGATEB::R(B),XS(a)
- P(a);OGATEB::R(B),XB(a)
- P(a);OGATEB::R(B),XR(a)
- P(e);SBLOCK::QAB1(H)
- Tries
- Try
- Q(H);CHECK
- Vars
- P(e);P_SPINP(e)::QAR1(H),XP(e)
- Refutation
- K(c);P-FLIGHT,XS(F)
- Try
- Q(H);CHECK
- Vars
- K(c);P-FLIGHT,XS(F)::QAR1(H)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(H);XP(e)
- Threat
- QAR1(H)
- Vars
- P(a);CHECK,OGATEB::R(B),XS(a)
- S(f);N_GUARD,XS(F)::S(D),XP(d)
- Refutation
- S(f);XQ(H)
- Try
- Actual
- K(C);S_FLIGHT
- Vars
- P(a);CHECK,OGATEB::R(B),XS(a)
- S(f);N_GUARD,P_SPINS(f),XS(F)::S(D),XP(d)
- P(e);OGATE,P_SPINP(e),SBLOCK,XS(F)::QAB(H)
- P(e);N_GUARD,XP(G)::R(B)
- P(a);OGATEB::R(B),XQ(a)
- P(a);OGATEB::R(B),XB(a)
- P(a);OGATEB::R(B),XR(a)
- S(f);N_GUARD::S(D),XP(d)
- P(b);SBLOCK::QAR(H)+S(F),XS(f)
- P(e);SBLOCK::S(D)
- P(e);SBLOCK::QAB1(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).