MESON Chess Problem Database

Problem Display
PID: 103747 (4b1N1/1Q2Nk1p/4p1pB/3p2K1/8/8/8/8 w - - 0 1)

Rallo, Vito

Sandrucci, Paolo

Telescacco 92, 1999

4b1N1/1Q2Nk1p/4p1pB/3p2K1/8/8/8/8

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qf3#
    • 1...e5
      • 2.Qxd5#
  • Tries
    • 1.Sxd5+?
      • 1...Kxg8
        • 2.Qg7#
      • 1...Bd7!
    • 1.Sf5+?
      • 1...Kxg8
        • 2.Qg7#
      • 1...Bd7!
    • 1.Sc6+?
      • 1...Kxg8
        • 2.Qg7#
      • 1...Bd7!
    • 1.Sxg6+?
      • 1...Kxg8
        • 2.Qg7#
      • 1...Bd7!
    • 1.Sc8+?
      • 1...Kxg8
        • 2.Qg7#
      • 1...Bd7!
    • 1.Qb8?
      • threat
        • 2.Qf4#
      • 1...Bd7
        • 2.Qf8#
      • 1...Ba4
        • 2.Qf8#
      • 1...Bb5
        • 2.Qf8#
      • 1...Bc6
        • 2.Qf8#
      • 1...e5!
  • Keys
    • 1.Qa8!
      • 1...e5
        • 2.Qxd5#
      • 1...Bd7
        • 2.Qf8#
      • 1...Ba4
        • 2.Qf8#
      • 1...Bb5
        • 2.Qf8#
      • 1...Bc6
        • 2.Qf8#
      • 1...d4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAR(C)
    • P(b);OGATEB::QAB(C),XP(a)
  • Tries
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • S(D);CHECK,XP(c)
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • B(f);OGATE::QAR1(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • P(b);OGATEB::QAB(C),XP(a)
      • B(f);OGATE::QAR1(C)
      • P(a);OGATE::QAR(C)
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