MESON Chess Problem Database

Problem Display
PID: 117319 (3Q3b/8/4pp2/2pN4/2N1k2P/2P5/4B3/1b5K w - - 0 1)

Laws, Benjamin Glover

Ottawa Citizen, 1887

3Q3b/8/4pp2/2pN4/2N1k2P/2P5/4B3/1b5K

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qxe6#
      • 1...Kf5
        • 2.Qh7#
      • 1...exd5
        • 2.Qg4#
      • 1...e5
        • 2.Sd2#
      • 1...f5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qa8#
      • 1...Kf5
        • 2.Qh7#
        • 2.Qg4#
      • 1...exd5
        • 2.Qg4#
      • 1...e5
        • 2.Sd6#
      • 1...f5
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(d)
      • Vars
        • K(b);P_SPINP(d),S_FLIGHT::QAB(G)
        • P(d);OGATE,SBLOCK,XS(F)::QAR2(G)
        • P(d);SBLOCK::S(D)
      • Refutation
        • P(e);
  • Actual
    • Q(G);
    • Threat
      • QAR2(G),XP(d)
    • Vars
      • K(b);OGATEB,P_SPINP(d),S_FLIGHT,XS(F)::QAB(G)
      • P(d);SBLOCK,XS(F)::QAR2(G)
      • P(d);SBLOCK::S(D)
      • P(e);SBLOCK::QAB(G)
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