MESON Chess Problem Database

Problem Display
PID: 144333 (Q7/1qpN3n/1Bk1P3/pN3R2/B2pn3/1Kb4r/1pRp4/1r6 w - - 0 1)

Toth, Gyula

Magyar Sakkvilag, 1931

Q7/1qpN3n/1Bk1P3/pN3R2/B2pn3/1Kb4r/1pRp4/1r6

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Rc5#
    • 1...Sg3
      • 2.Rc5#
    • 1...Sc5+
      • 2.Rxc5#
    • 1...Seg5
      • 2.Rc5#
    • 1...Sd6
      • 2.Sxd4#
      • 2.Sa7#
      • 2.Rc5#
    • 1...Sef6
      • 2.Rc5#
    • 1...cxb6
      • 2.Sb8#
  • Tries
    • 1.Bxd4?
      • threat
        • 2.Sb8#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Qxa8!
    • 1.Bxa5?
      • threat
        • 2.Sb8#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Qxa8!
    • 1.Ba7?
      • threat
        • 2.Sb8#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Qxa8!
    • 1.Bxc7?
      • threat
        • 2.Sb8#
      • 1...Sc5+
        • 2.Rxc5#
      • 1...Qxa8!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Sb8#
      • 1...Bb4+
        • 2.Sc3#
      • 1...Sxc5+
        • 2.Rxc5#
      • 1...Qxa8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(g);N_GUARD::R1(E)
    • S(g);CHECK,N_GUARD,N_SPINB(d)::R1(E),XS(g)
    • P(k);SBLOCK,XB(F)::S(H)
  • Tries
    • Try
      • B(F);P_SPINS(D),XP(f)
      • Threat
        • S(H)
      • Vars
        • S(g);CHECK,N_GUARD,N_SPINB(d)::R1(E),XS(g)
      • Refutation
        • Q(j);N_PINS(D),N_SPINQ(j),XQ(I)
    • Try
      • B(F);P_SPINS(D),XP(h)
      • Threat
        • S(H)
      • Vars
        • S(g);CHECK,N_GUARD,N_SPINB(d)::R1(E),XS(g)
      • Refutation
        • Q(j);N_PINS(D),N_SPINQ(j),XQ(I)
    • Try
      • B(F);P_SPINS(D)
      • Threat
        • S(H)
      • Vars
        • S(g);CHECK,N_GUARD,N_SPINB(d)::R1(E),XS(g)
      • Refutation
        • Q(j);N_PINS(D),N_SPINQ(j),XQ(I)
    • Try
      • B(F);P_SPINS(D),XP(k)
      • Threat
        • S(H)
      • Vars
        • S(g);CHECK,N_GUARD,N_SPINB(d)::R1(E),XS(g)
      • Refutation
        • Q(j);N_PINS(D),N_SPINQ(j),XQ(I)
  • Actual
    • B(F);N_PINB(d),P_SPINS(D)
    • Threat
      • S(H)
    • Vars
      • B(d);CHECK,N_PINS(D)::B(C)+S(D)
      • S(g);CHECK,OGATE,XB(F)::R1(E),XS(g)
      • Q(j);N_PINS(D),N_SPINQ(j),XQ(I)::B(C)+S(D)
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