MESON Chess Problem Database

Problem Display
PID: 57594 (2K5/3R3B/2p1k3/2r3B1/8/8/1Q6/b7 w - - 0 1)

Brill, Robert C

Chess Life, 1957

2K5/3R3B/2p1k3/2r3B1/8/8/1Q6/b7

#2

5 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qe7#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bxg7!
    • 1.Qe2+?
      • 1...Be5
        • 2.Qg4#
      • 1...Re5!
    • 1.Qb8?
      • threat
        • 2.Qd6#
      • 1...Rd5
        • 2.Re7#
      • 1...Be5!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qd6#
      • 1...Rd5
        • 2.Re7#
      • 1...Re5
        • 2.Qh6#
      • 1...Be5
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);P_SPINB(a),SBLOCK,S_CUTR(b)::QAB(A)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(b);SBLOCK::R1(C)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(b);SBLOCK::R1(C)
      • R(b);SBLOCK,S_CUTB(a)::QAR(A)
      • B(a);SBLOCK,S_CUTR(b)::QAB(A)
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