MESON Chess Problem Database

Problem Display
PID: 51606 (QB6/1n1p3N/3R4/2p5/2P1Bk2/5P2/7P/5K2 w - - 0 1)

Barrow, John Hugh

Bolton Football and Field, 1914

QB6/1n1p3N/3R4/2p5/2P1Bk2/5P2/7P/5K2

#2

9 + 4

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Rd3#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Rf6#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Ke5!
    • 1.Kf2?
      • threat
        • 2.Rf6#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Ke5!
    • 1.Rd3+?
      • 1...Sd6
        • 2.Bxd6#
      • 1...d6!
    • 1.Rxd7+?
      • 1...Ke3
        • 2.Rd3#
        • 2.Qa3#
      • 1...Sd6!
    • 1.Qxb7?
      • 1...Ke3
        • 2.Rd3#
      • 1...Ke5!
    • 1.Qa3?
      • threat
        • 2.Rf6#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Ke5!
  • Keys
    • 1.Bf5!
      • 1...Ke3
        • 2.Rd3#
      • 1...Kxf3
        • 2.Rd3#
      • 1...Ke5
        • 2.Rd5#
      • 1...Kxf5
        • 2.Rf6#
      • 1...Sxd6
        • 2.Qe4#
      • 1...Sa5
        • 2.Qe4#
      • 1...Sd8
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::R1(F)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • B(I)+R(F),DCHECK
      • Vars
        • S(c);OGATE,P_SPINS(c),XR(F)::B(I),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Threat
        • B(I)+R(F),DCHECK
      • Vars
        • S(c);OGATE,P_SPINS(c),XR(F)::B(I),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(I),XS(c)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • R(F);CHECK,XP(d)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(H);XS(c)
      • Vars
        • K(a);S_FLIGHT::R1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • B(I)+R(F),DCHECK
      • Vars
        • S(c);OGATE,P_SPINS(c),XR(F)::B(I),XS(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(a);S_FLIGHT::R1(F)
      • K(a);P-FLIGHT,P_SPINS(c),XP(C)::R(F)
      • K(a);S_FLIGHT::B(I)+R(F),DCHECK
      • K(a);P-FLIGHT,XB(E)::R1(F)
      • S(c);OGATE,P_SPINS(c),XR(F)::QAR1(H)
      • S(c);OGATE::QAR1(H)
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