MESON Chess Problem Database

Problem Display
PID: 51628 (4Q3/8/3pb2N/3Nk1p1/5bR1/3Kp3/4P3/8 w - - 0 1)

Barrow, John Hugh

Chess Amateur (The), 1923

4Q3/8/3pb2N/3Nk1p1/5bR1/3Kp3/4P3/8

#2

6 + 6

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb5#
    • 1...Bh2
      • 2.Rxg5#
    • 1...Bg3
      • 2.Rxg5#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Qxe6#
        • 2.Qh8#
      • 1...d5
        • 2.Qxe6#
      • 1...Kf6!
    • 1.Sf7+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kf5!
    • 1.Sg8?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Bh2
        • 2.Rxg5#
      • 1...Bg3
        • 2.Rxg5#
      • 1...Kf5!
    • 1.Rxf4?
      • threat
        • 2.Rf5#
      • 1...Kxd5
        • 2.Qb5#
      • 1...gxf4!
    • 1.Qg6?
      • threat
        • 2.Qe4#
      • 1...Bf5+
        • 2.Qxf5#
      • 1...Bxd5
        • 2.Qf5#
      • 1...Kxd5!
    • 1.Qe7?
      • 1...Bh2
        • 2.Rxg5#
      • 1...Bg3
        • 2.Rxg5#
      • 1...Kxd5!
  • Keys
    • 1.Kc4!
      • 1...Ke4
        • 2.Qxe6#
      • 1...Bh2
        • 2.Qh8#
      • 1...Bg3
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);N_SPINB(f),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
    • B(b);N_GUARD::R(C),XP(d)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(F),XB(f)
      • Refutation
        • K(c);N_SPINB(f),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);N_SPINB(f),P-FLIGHT,XS(D)::QAR2(F)
      • Refutation
        • K(c);N_SPINB(f),P-FLIGHT
    • Try
      • S(E);
      • Vars
        • K(c);N_SPINB(f),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
        • B(b);N_GUARD::R(C),XP(d)
      • Refutation
        • K(c);N_SPINB(f),P-FLIGHT
    • Try
      • R(C);XB(b)
      • Threat
        • R1(C)
      • Vars
        • K(c);N_SPINB(f),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
      • Refutation
        • P(d);XR(C)
    • Try
      • Q(F);N_PINB(f)
      • Threat
        • QAR1(F)
      • Vars
        • B(f);CHECK,N_GUARD::QAR1(F),XB(f)
        • B(f);N_GUARD,SBLOCK,XS(D)::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT,XS(D)
    • Try
      • Q(F);
      • Vars
        • B(b);N_GUARD::R(C),XP(d)
      • Refutation
        • K(c);N_SPINB(f),P-FLIGHT,XS(D)
  • Actual
    • K(B);P_SPINS(D),S_FLIGHT
    • Vars
      • K(c);N_SPINB(f),P-FLIGHT,P_SPINB(b)::QAR2(F),XB(f)
      • B(b);::QAB(F)
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