MESON Chess Problem Database

Problem Display
PID: 116138 (4N3/4P3/6N1/1B1k1n2/p3r2r/K1P5/1Q6/4R3 w - - 0 1)

Gold, Samuel

Checkmate, 1901

4N3/4P3/6N1/1B1k1n2/p3r2r/K1P5/1Q6/4R3

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qa2#
    • 1...Rb4
      • 2.Re5#
    • 1...Rc4
      • 2.Re5#
    • 1...Rd4
      • 2.Re5#
    • 1...Ref4
      • 2.Re5#
    • 1...Reg4
      • 2.Re5#
    • 1...Re5
      • 2.Rxe5#
  • Tries
    • 1.Qa2+?
      • 1...Rc4
        • 2.Re5#
      • 1...Kc5!
    • 1.c4+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Rxc4
        • 2.Re5#
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Sc7#
      • 1...Ke6
        • 2.Qc4#
      • 1...Rxb4
        • 2.Re5#
      • 1...Rxe7
        • 2.Sf6#
      • 1...Rc4
        • 2.Sf6#
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • K(d);P_SPINR(b),S_FLIGHT::QAB(B)
    • R(b);OGATE::R1(A)
    • R(b);OGATE::R1(A),XR(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);OGATE,P_SPINR(b)::R1(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • P(D);CHECK
      • Vars
        • K(d);P_SPINR(b),S_FLIGHT::QAR1(B)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • S(H)
    • Vars
      • K(d);P_SPINR(b),S_FLIGHT::QAB(B)
      • R(b);OGATE,XQ(B)::R1(A)
      • R(b);XP(G)::S(H)
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