MESON Chess Problem Database

Problem Display
PID: 146976 (5RB1/1NB5/3p4/1np1k1PN/K1R1r3/pnp5/4Qb2/1q1r3b w - - 0 1)

Evans, DW

Chess, 1955

5RB1/1NB5/3p4/1np1k1PN/K1R1r3/pnp5/4Qb2/1q1r3b

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...S3d4
      • 2.Rxc5#
    • 1...S5d4
      • 2.Bxd6#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Rf5#
      • 1...Rxe2
        • 2.Re8#
      • 1...Re3
        • 2.Re8#
      • 1...S3d4
        • 2.Rxc5#
      • 1...S5d4
        • 2.Bxd6#
      • 1...Bxg3!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Rf5#
      • 1...Rxe2
        • 2.Re8#
      • 1...Re3
        • 2.Re8#
      • 1...S3d4
        • 2.Rxc5#
      • 1...S5d4
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_PINR(C),SBLOCK::R(C),XP(j)
    • S(i);N_GUARD,N_PINR(C),S_CUTR(b)::B(G),XP(l)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(H)
      • Vars
        • R(h);N_PINR(C),N_SPINR(h),XQ(A)::R(H)
        • R(h);N_PINR(C)::R(H)
        • S(f);N_PINR(C),SBLOCK::R(C),XP(j)
        • S(i);N_GUARD,N_PINR(C),S_CUTR(b)::B(G),XP(l)
      • Refutation
        • B(d);XS(E)
  • Actual
    • S(E);
    • Threat
      • R1(H)
    • Vars
      • R(h);N_PINR(C),N_SPINR(h),XQ(A)::R(H)
      • R(h);N_PINR(C)::R(H)
      • S(f);N_PINR(C),SBLOCK::R(C),XP(j)
      • S(i);N_GUARD,N_PINR(C),S_CUTR(b)::B(G),XP(l)
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Developed and maintained by Brian Stephenson.
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