MESON Chess Problem Database

Problem Display
PID: 208802 (7Q/8/3R4/2ppp3/3k4/2R1r3/2P5/2K3B1 w - - 0 1)

Thornton, George Howard

Detroit Free Press, 1876

7Q/8/3R4/2ppp3/3k4/2R1r3/2P5/2K3B1

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qxe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qh8#
      • 1...Kxc3!
    • 1.Qh4+?
      • 1...e4
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kxc3!
  • Keys
    • 1.Qc8!
      • 1...Kxc3
        • 2.Qxc5#
      • 1...Ke4
        • 2.Qg4#
      • 1...c4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...e4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F),XR(a)
      • Vars
        • K(b);N_SPINP(d),N_SPINR(a),P-FLIGHT::QAR2(F)
        • P(e);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT,XR(D)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);N_SPINP(d),N_SPINR(a),S_FLIGHT,XR(D)
  • Actual
    • Q(F);
    • Vars
      • K(b);N_SPINP(d),N_SPINR(a),P_SPINP(c),S_FLIGHT,XR(D)::QAR2(F),XP(c)
      • K(b);N_SPINP(d),N_SPINR(a),P-FLIGHT::QAR2(F)
      • P(e);OGATEB,SBLOCK::QAB(F)
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