MESON Chess Problem Database

Problem Display
PID: 17915 (4b2R/2pp2n1/1P1R4/K2BN2q/Q1N4k/P4P2/1P4PP/2B5 w - - 0 1)

Ling, John Francis

The Problemist, 1951

4b2R/2pp2n1/1P1R4/K2BN2q/Q1N4k/P4P2/1P4PP/2B5

#2

14 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Sxg6#
    • 1...cxb6+
      • 2.Sxb6#
    • 1...cxd6
      • 2.Sxd6#
  • Keys
    • 1.Bf7!
      • threat
        • 2.Rd4#
      • 1...cxb6+
        • 2.Sxb6#
      • 1...cxd6
        • 2.Sxd6#
      • 1...Sf5
        • 2.Sg6#
        • 2.Rxh5#
      • 1...Se6
        • 2.Rxh5#
      • 1...c5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::S(K),XB(f)
    • P(c);CHECK,XP(L)::QAR(G)+S(H),XP(c)
    • P(c);XR(M)::QAR(G)+S(H),XP(c)
  • Actual
    • B(J);P_SPINS(K)
    • Threat
      • R(M)
    • Vars
      • P(c);CHECK,XP(L)::QAR(G)+S(H),XP(c)
      • P(c);XR(M)::QAR(G)+S(H),XP(c)
      • S(e);N_GUARD::R1(N),XQ(b)
      • P(c);N_PINS(K)::S(K)
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