MESON Chess Problem Database

Problem Display
PID: 41915 (8/1N2pp2/3P1P2/R1KB1k1N/8/5pQ1/3P1Rn1/8 w - - 0 1)

Barnes, Barry Peter

Reeves, Alfred Christopher

1st Prize, The Problemist, 1966

8/1N2pp2/3P1P2/R1KB1k1N/8/5pQ1/3P1Rn1/8

#2

10 + 5

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rxf3#
    • 1...exd6+
      • 2.Sxd6#
    • 1...exf6
      • 2.Sg7#
  • Tries
    • 1.Rxg2?
      • threat
        • 2.Qf4#
        • 2.Qg5#
      • 1...exd6+
        • 2.Sxd6#
      • 1...exf6
        • 2.Sg7#
        • 2.Qf4#
      • 1...e5
        • 2.Qxf3#
        • 2.Qh3#
        • 2.Qg4#
        • 2.Qg5#
      • 1...fxg2!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Qe4#
        • 2.Qg5#
        • 2.d4#
      • 1...Kxg4!
  • Keys
    • 1.Bxf7!
      • 1...exd6+
        • 2.Sxd6#
      • 1...Ke4
        • 2.Bg6#
      • 1...exf6
        • 2.Kd4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se1
        • 2.Qf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sh4
        • 2.Qf4#
      • 1...e5
        • 2.Qg6#
      • 1...e6
        • 2.Bg6#

There are these versions: 56847

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • 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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