MESON Chess Problem Database

Problem Display
PID: 267200 (1K1B4/1R3PQ1/k4N1R/3npB2/1p2p3/7r/3b4/5n2 w - - 0 1)

Vincent, E

The Problemist, 1955

1K1B4/1R3PQ1/k4N1R/3npB2/1p2p3/7r/3b4/5n2

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxd5#
    • 1...Se3
      • 2.Sh5#
    • 1...Sxf6
      • 2.Rxf6#
      • 2.Qxf6#
    • 1...e3
      • 2.Bd3#
  • Tries
    • 1.Sxe4+?
      • 1...Rxh6
        • 2.Sc5#
      • 1...Bxh6
        • 2.Sc5#
      • 1...Sf6
        • 2.Sc5#
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Sb6!
    • 1.Sxd5+?
      • 1...Bxh6
        • 2.Sxb4#
        • 2.Qf6#
        • 2.Qg6#
      • 1...Rxh6!
    • 1.Sd7+?
      • 1...Rxh6
        • 2.Sc5#
      • 1...Bxh6
        • 2.Sc5#
      • 1...Sf6
        • 2.Sc5#
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Sb6!
    • 1.Bd7?
      • threat
        • 2.Bb5#
        • 2.Ra7#
      • 1...Sb6
        • 2.Ra7#
      • 1...Be3
        • 2.Bb5#
      • 1...Sc3
        • 2.Ra7#
      • 1...Sc7!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qa7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Re3
        • 2.Sxd5#
      • 1...Be3
        • 2.Qxf1#
      • 1...Sfe3
        • 2.Qa1#
      • 1...Sde3
        • 2.Sh5#
      • 1...e3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,S_CUTB(b)::R(C)+S(B),XS(f)
    • S(f);N_GUARD,S_CUTB(b)::R(C)+S(B)
    • P(e);OGATE::B(A)
  • Tries
    • Try
      • S(B);CHECK,XP(e)
      • Vars
        • R(c);XR(C)::S(B)
        • B(b);XR(C)::S(B)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(B);CHECK,XS(f)
      • Refutation
        • R(c);XR(C)
    • Try
      • S(B);CHECK
      • Vars
        • R(c);XR(C)::S(B)
        • B(b);XR(C)::S(B)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::R1(D)
        • B(b);::B(A)
      • Refutation
        • S(f);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(f);N_GUARD::QAR1(F),XS(f)
      • R(c);N_GUARD,S_CUTB(b)::R(C)+S(B),XS(f)
      • B(b);S_CUTR(c)::QAB(F),XS(a)
      • S(a);OGATE::QAR(F)
      • S(f);N_GUARD,S_CUTB(b)::R(C)+S(B)
      • P(e);OGATE::B(A)
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