MESON Chess Problem Database

Problem Display
PID: 56847 (8/N2pp3/2P1P3/RKB1k1N1/8/4pQ2/2P1Rn2/8 w - - 0 1)

Barnes, Barry Peter

Reeves, Alfred Christopher

1st Prize, The Problemist, 1966

8/N2pp3/2P1P3/RKB1k1N1/8/4pQ2/2P1Rn2/8

#2

10 + 5

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Sh1
      • 2.Rxe3#
    • 1...Sd3
      • 2.Rxe3#
    • 1...Sh3
      • 2.Rxe3#
    • 1...dxc6+
      • 2.Sxc6#
    • 1...dxe6
      • 2.Sf7#
  • Tries
    • 1.Rxf2?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...dxc6+
        • 2.Sxc6#
      • 1...dxe6
        • 2.Sf7#
        • 2.Qe4#
      • 1...d5
        • 2.Qxe3#
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qf5#
      • 1...exf2!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qf5#
        • 2.c4#
      • 1...Kxf4!
  • Keys
    • 1.Bxe7!
      • 1...dxc6+
        • 2.Sxc6#
      • 1...Kd4
        • 2.Bf6#
      • 1...dxe6
        • 2.Kc4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Sg4
        • 2.Qe4#
      • 1...d5
        • 2.Qf6#
      • 1...d6
        • 2.Bf6#

This is a version of 41915

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(B),XP(b)
    • P(d);CHECK,XP(H)::S(J),XP(d)
    • P(d);SBLOCK,XP(I)::S(G)
  • Tries
    • Try
      • R(B);N_PINP(b),XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);CHECK,XP(H)::S(J),XP(d)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XQ(C)
  • Actual
    • B(F);XP(e)
    • Vars
      • P(d);CHECK,XP(H)::S(J),XP(d)
      • K(c);N_SPINP(b),S_FLIGHT::B(F)
      • P(d);N_GUARD,XP(I)::R(D)+K(E)
      • S(a);N_GUARD,N_SPINP(b)::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
      • P(d);SBLOCK::QAB1(C)
      • P(d);SBLOCK::B(F)
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