MESON Chess Problem Database

Problem Display
PID: 53310 (5N1b/4Q1n1/R3q2k/5b2/3R2P1/8/8/B5K1 w - - 0 1)

Gabor, Nicholas

The Chess Review, 1933

5N1b/4Q1n1/R3q2k/5b2/3R2P1/8/8/B5K1

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa6
      • 2.Qe3#
    • 1...Qb6
      • 2.Qe3#
    • 1...Qc6
      • 2.Qe3#
    • 1...Qd6
      • 2.Qe3#
    • 1...Qf6
      • 2.Qe3#
    • 1...Qg6
      • 2.Qe3#
    • 1...Sh5
      • 2.g5#
  • Tries
    • 1.Rxe6+?
      • 1...Bxe6
        • 2.Qf6#
      • 1...Bg6
        • 2.Rxg6#
      • 1...Sxe6!
    • 1.Qf6+?
      • 1...Bg6
        • 2.Qf4#
      • 1...Qxf6!
  • Keys
    • 1.Rd5!
      • 1...Qb6+
        • 2.Qe3#
      • 1...Qxa6
        • 2.Qe3#
      • 1...Bxg4
        • 2.Qg5#
      • 1...Qf6
        • 2.Qe3#
      • 1...Bg6
        • 2.Qg5#
      • 1...Qc6
        • 2.Qe3#
      • 1...Qd6
        • 2.Qe3#
      • 1...Qg6
        • 2.Qe3#
      • 1...Bb1
        • 2.Qg5#
      • 1...Bc2
        • 2.Qg5#
      • 1...Bd3
        • 2.Qg5#
      • 1...Be4
        • 2.Qg5#
      • 1...Bh7
        • 2.Qg5#
      • 1...Sh5
        • 2.g5#
      • 1...Se8
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_SPINQ(b),OGATE,SBLOCK,XR(E)::QAB(F)
    • Q(b);OGATE,P_PINR(C)::QAB(F)
    • Q(b);OGATE::QAB(F)
    • Q(b);OGATE,P_PINP(D)::QAB(F)
    • S(d);SBLOCK::P(D)
  • Tries
    • Try
      • R(E);CHECK,XQ(b)
      • Vars
        • B(a);N_GUARD,XR(E)::QAR2(F)
        • B(a);N_GUARD,P_SPINB(a)::R1(E),XB(a)
      • Refutation
        • S(d);XR(E)
    • Try
      • Q(F);CHECK,N_PINQ(b)
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAB(F)
      • Refutation
        • Q(b);P_SPINQ(b),XQ(F)
  • Actual
    • R(C);
    • Vars
      • Q(b);CHECK,OGATE::QAB(F)
      • Q(b);N_SPINQ(b),OGATE,SBLOCK,XR(E)::QAB(F)
      • B(a);XP(D)::QAB1(F)
      • Q(b);OGATE::QAB(F)
      • B(a);N_SPINQ(b)::QAB1(F)
      • Q(b);OGATE,P_PINP(D)::QAB(F)
      • B(a);::QAB1(F)
      • S(d);SBLOCK::P(D)
      • S(d);N_GUARD::QAR2(F)
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