MESON Chess Problem Database

Problem Display
PID: 10321 (8/1N6/2p5/P1P2p2/kn2bR2/PN6/2PK4/2BQ1B2 w - - 0 1)

Rice, John Michael

1st Prize, Problemisten, 1963

8/1N6/2p5/P1P2p2/kn2bR2/PN6/2PK4/2BQ1B2

#2

11 + 5

3174 The Two-move Chess Problem Tradition and Development 1966
3747 FIDE Album (1962-1964) 1968
5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Rxb4#
    • 1...Bxc2
      • 2.Rxb4#
    • 1...Bg2
      • 2.Rxb4#
    • 1...Bd3
      • 2.Rxb4#
    • 1...Bf3
      • 2.Rxb4#
    • 1...Bd5
      • 2.Rxb4#
  • Tries
    • 1.c3?
      • 1...Bc2
        • 2.Rxb4#
      • 1...Bd3
        • 2.Rxb4#
      • 1...Sd3
        • 2.Sd4#
      • 1...Bb1
        • 2.Rxb4#
      • 1...Bh1
        • 2.Sa1#
        • 2.Rxb4#
      • 1...Bg2
        • 2.Sa1#
        • 2.Rxb4#
      • 1...Bf3
        • 2.Rxb4#
      • 1...Bd5
        • 2.Rxb4#
      • 1...Sa2
        • 2.Sa1#
      • 1...Sd5
        • 2.Sa1#
      • 1...Sa6
        • 2.Sa1#
      • 1...Sc2!
  • Keys
    • 1.Sa1!
      • 1...Bxc2
        • 2.Rxb4#
        • 2.Qxc2#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Bd3
        • 2.Rxb4#
      • 1...Sd3
        • 2.c4#
      • 1...Bh1
        • 2.Rxb4#
        • 2.c3#
      • 1...Bg2
        • 2.Rxb4#
        • 2.c3#
      • 1...Bf3
        • 2.Rxb4#
      • 1...Bd5
        • 2.Rxb4#
      • 1...Sa2
        • 2.c3#
      • 1...Sd5
        • 2.c3#
      • 1...Sa6
        • 2.c3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(c);OGATE,P_SPINS(b)::R1(H),XS(b)
    • B(c);OGATE,P_SPINS(b),XP(D)::R1(H),XS(b)
  • Tries
    • Try
      • P(D);
      • Vars
        • B(c);OGATE,P_SPINS(b)::R1(H),XS(b)
        • S(b);N_GUARD,P_SPINB(c)::QAB(B)+S(G)
      • Refutation
        • S(b);P_SPINB(c)
  • Actual
    • S(G);
    • Vars
      • S(b);OGATE,P_SPINB(c),P_SPINS(b),XP(D)::QAB(B),XS(b)
      • B(c);OGATE,P_SPINS(b)::R1(H),XS(b)
      • S(b);N_GUARD,P_SPINB(c)::QAB(B)+P(D)
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