MESON Chess Problem Database

Problem Display
PID: 214948 (k7/P7/P7/2P5/2N3K1/2N1b3/1n1nR3/Q7 w - - 0 1)

Anonymous

SEPA, 1942

k7/P7/P7/2P5/2N3K1/2N1b3/1n1nR3/Q7

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb2?
      • threat
        • 2.Qb7#
        • 2.Qb8#
      • 1...Kxa7
        • 2.Qb7#
      • 1...Bf4
        • 2.Qb7#
      • 1...Sb3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sb6#
      • 1...Bxc5
        • 2.Re8#
      • 1...Sbxc4
        • 2.Qh8#
      • 1...Sdxc4
        • 2.Qh1#
      • 1...Sa4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT,XP(H)::QAR1(A)
        • B(c);::QAB1(A)
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • S(D)
    • Vars
      • B(c);OGATE,XP(F)::R(B)
      • S(a);OGATE,XS(D)::QAB1(A)
      • S(b);N_GUARD,XS(D)::QAB(A)
      • S(a);OGATE::QAB1(A)
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