MESON Chess Problem Database

Problem Display
PID: 145125 (1B6/8/2p2p2/2pP4/Q1p1k2P/2KN4/5p2/3N1B2 w - - 0 1)

Anonymous

Leeds Mercury Weekly Supplement, 1901

(First published on Sat Jun 22 1901)

1B6/8/2p2p2/2pP4/Q1p1k2P/2KN4/5p2/3N1B2

#2

8 + 6

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qxc4#
    • 1...f5
      • 2.Bg2#
  • Tries
    • 1.S3xf2+?
      • 1...Kxd5
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Kf5
        • 2.Qc2#
      • 1...Kf3!
    • 1.Qxc4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf5!
  • Keys
    • 1.Qc2!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxd5
        • 2.Sf4#
      • 1...Kf5
        • 2.S3xf2#
      • 1...cxd3
        • 2.Qxd3#
      • 1...cxd5
        • 2.Se1#
      • 1...f5
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),S_FLIGHT,XP(G)::QAB1(E),XP(b)
    • P(f);SBLOCK::B(B)
  • Tries
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB(E)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(E);N_PINP(b)
    • Vars
      • K(c);S_FLIGHT::QAB1(E)
      • K(c);S_FLIGHT,XP(G)::S(D)
      • K(c);S_FLIGHT::QAB(E)+S(D),XP(a)
      • P(b);OGATE,P_SPINP(b),XS(D)::QAB1(E),XP(b)
      • P(e);SBLOCK,XP(G)::QAB(E)+S(D)
      • P(f);SBLOCK::B(B)
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