MESON Chess Problem Database

Problem Display
PID: 54411 (2K5/4P3/2Q1N3/3r4/Rn1pkbbR/4pN2/2P1B1P1/8 w - - 0 1)

Barrow, John Hugh

Grantham Journal, 1928

2K5/4P3/2Q1N3/3r4/Rn1pkbbR/4pN2/2P1B1P1/8

#2

10 + 7

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rxf4#
    • 1...Bf5
      • 2.Rxf4#
    • 1...Bh5
      • 2.Rxf4#
    • 1...Sa2
      • 2.Bd3#
    • 1...Sxc2
      • 2.Qxc2#
    • 1...Sd3
      • 2.Bxd3#
    • 1...Sa6
      • 2.Bd3#
    • 1...Sxc6
      • 2.Bd3#
    • 1...d3
      • 2.Bxd3#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Rxf4#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Kf5!
    • 1.Qxd5+?
      • 1...Sxd5
        • 2.Bd3#
      • 1...Kxd5!
  • Keys
    • 1.e8Q!
      • 1...Bxe6+
        • 2.Qexe6#
      • 1...Kf5
        • 2.Sg7#
      • 1...Bxf3
        • 2.Sg7#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sxc6
        • 2.Bd3#
      • 1...Bh2
        • 2.Qg6#
      • 1...Bg3
        • 2.Qg6#
      • 1...Be5
        • 2.Qg6#
      • 1...Bg5
        • 2.Qg6#
      • 1...Bd6
        • 2.Qg6#
      • 1...Bh6
        • 2.Qg6#
      • 1...Bc7
        • 2.Qg6#
      • 1...Bb8
        • 2.Qg6#
      • 1...Bh3
        • 2.Rxf4#
      • 1...Bf5
        • 2.Rxf4#
      • 1...Bh5
        • 2.Rxf4#
      • 1...Sa2
        • 2.Bd3#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Sa6
        • 2.Bd3#
      • 1...d3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • B(f);OGATE,P_SPINB(e)::R1(F),XB(e)
    • B(f);N_PINS(H),OGATE,P_SPINB(e)::R1(F),XB(e)
    • S(b);N_GUARD,P_SPINP(c)::B(B)
    • S(b);OGATE,P_SPINP(c),XP(A)::QAB(G),XS(b)
    • S(b);N_GUARD,P_SPINP(c)::B(B),XS(b)
    • S(b);N_GUARD,N_SPINR(g),P_SPINP(c),XQ(G)::B(B)
    • P(c);P_SPINS(b)::B(B),XP(c)
  • Tries
    • Try
      • R(F);N_SPINS(H),P_PINB(e),XB(f)
      • Threat
        • R1(F),XB(e)
      • Vars
        • S(b);N_GUARD,P_SPINP(c)::B(B),XS(b)
      • Refutation
        • K(d);N_SPINB(e),N_SPINR(g),S_FLIGHT
    • Try
      • Q(G);CHECK,XR(g)
      • Vars
        • S(b);P_SPINP(c),SBLOCK,XQ(G)::B(B)
      • Refutation
        • K(d);S_FLIGHT,XQ(G)
  • Actual
    • P(I);
    • Vars
      • B(f);CHECK,OGATE,P_SPINB(e),XS(H)::QAR2(I),XB(f)
      • K(d);N_PINS(H),N_SPINR(g),S_FLIGHT::S(H)
      • B(f);N_PINS(H),P_SPINB(e),XS(D)::QAR(I)+S(H)
      • S(b);OGATE,P_SPINP(c),XP(A)::QAB(G),XS(b)
      • S(b);N_GUARD,N_SPINR(g),P_SPINP(c),XQ(G)::B(B)
      • B(e);P_SPINB(f)::QAB(I)
      • B(f);OGATE,P_SPINB(e)::R1(F),XB(e)
      • B(f);N_PINS(H),OGATE,P_SPINB(e)::R1(F),XB(e)
      • S(b);N_GUARD,P_SPINP(c)::B(B)
      • S(b);N_GUARD,P_SPINP(c)::B(B),XS(b)
      • P(c);P_SPINS(b)::B(B),XP(c)
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