MESON Chess Problem Database

Problem Display
PID: 277071 (4R1KB/4N3/3p3b/8/2p1k3/2R1p1Q1/6r1/4rb1B w - - 0 1)

de Bruyn, M

Probleemblad, 1954

4R1KB/4N3/3p3b/8/2p1k3/2R1p1Q1/6r1/4rb1B

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Bxg2#
    • 1...Bf8
      • 2.Qg4#
    • 1...e2
      • 2.Rxc4#
  • Tries
    • 1.Sc6+?
      • 1...Kf5
        • 2.Sd4#
      • 1...Kd5!
    • 1.Sg6+?
      • 1...Kf5
        • 2.Sh4#
      • 1...Kd5!
    • 1.Sc8+?
      • 1...Kf5
        • 2.Sxd6#
      • 1...Kd5!
  • Keys
    • 1.Rf8!
      • threat
        • 2.Qg6#
      • 1...Bxf8
        • 2.Qg4#
      • 1...Bg7
        • 2.Qf4#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Bg5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::B(A),XR(c)
    • B(h);N_GUARD::QAR2(C)
    • P(d);S_CUTB(b)::R(B),XP(e)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_GUARD,N_SPINR(c),S_FLIGHT::S(D)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(D);CHECK,N_SPINQ(C)
      • Vars
        • K(f);N_GUARD,N_SPINR(c),S_FLIGHT::S(D)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(f);N_GUARD,N_SPINR(c),S_FLIGHT::S(D),XP(g)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAB(C)
    • Vars
      • B(h);N_GUARD,XR(E)::QAR2(C)
      • B(h);N_PINQ(C)::QAR1(C)
      • B(h);N_GUARD::R1(E),XB(h)
      • B(h);N_PINQ(C)::QAB1(C)
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