MESON Chess Problem Database

Problem Display
PID: 16651 (2B1N3/B1P5/R2P1P2/1P1k2P1/N1p1nP2/2P5/3PK1Q1/8 w - - 0 1)

Coombes, TA

Chess, 1942

2B1N3/B1P5/R2P1P2/1P1k2P1/N1p1nP2/2P5/3PK1Q1/8

#2

15 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qh3?
      • threat
        • 2.Be6#
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sxc3+
        • 2.Sxc3#
      • 1...Sxd2
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sxg5
        • 2.Bb7#
        • 2.Qf5#
      • 1...Sxd6
        • 2.Qe6#
      • 1...Sxf6
        • 2.Sxf6#
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sf2
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sc5
        • 2.Qf5#
      • 1...Sg3+!
    • 1.Qg4?
      • threat
        • 2.Be6#
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sxc3+
        • 2.Sxc3#
      • 1...Sxd2
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sxg5
        • 2.Bb7#
        • 2.Qf5#
      • 1...Sxd6
        • 2.Qe6#
      • 1...Sxf6
        • 2.Sxf6#
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sf2
        • 2.Bb7#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sc5
        • 2.Qf5#
      • 1...Sg3+!
  • Keys
    • 1.Kf3!
      • 1...Sxd2+
        • 2.Qxd2#
      • 1...Sxg5+
        • 2.Qxg5#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Sf2
        • 2.Kxf2#
      • 1...Sg3
        • 2.Kxg3#
      • 1...Sc5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINS(b)
      • Threat
        • DUALS(4)
      • Vars
        • S(b);CHECK,XP(D)::S(E),XS(b)
        • S(b);XP(J)::QAB1(C)
        • S(b);::QAR2(C)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(C);N_PINS(b)
      • Threat
        • DUALS(4)
      • Vars
        • S(b);CHECK,XP(D)::S(E),XS(b)
        • S(b);XP(J)::QAB1(C)
        • S(b);::QAR2(C)
      • Refutation
        • S(b);CHECK
  • Actual
    • K(B);N_PINS(b),S_FLIGHT
    • Vars
      • S(b);CHECK,OGATE,XP(A)::QAR(C),XS(b)
      • S(b);CHECK,OGATE,XP(H)::QAR(C),XS(b)
      • S(b);XP(D)::S(E),XS(b)
      • S(b);OGATE,XP(J)::R1(I),XS(b)
      • S(b);XP(K)::S(O),XS(b)
      • S(b);::QAB(C)+K(B),XS(b)
      • S(b);SBLOCK::S(E)
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