MESON Chess Problem Database

Problem Display
PID: 180615 (8/8/Q2p1K2/8/3pk3/8/3P4/3B4 w - - 0 1)

Woodworth, Robert

StrateGems, 2017

8/8/Q2p1K2/8/3pk3/8/3P4/3B4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc4#
  • Tries
    • 1.Qe2+?
      • 1...Kf4
        • 2.Qf3#
        • 2.Qg4#
      • 1...Kd5!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4
        • 2.Qf3#
      • 1...d5!
    • 1.Qxd6?
      • 1...d3
        • 2.Qe5#
      • 1...Kd3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4
        • 2.Qg4#
      • 1...Kd5
        • 2.Bf3#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(C);XP(c)
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::B(A)
      • P(a);OGATEB::QAR2(C)
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