MESON Chess Problem Database

Problem Display
PID: 96677 (8/K4Q2/8/8/8/3B3p/R3Np2/5kN1 w - - 0 1)

Robert, Philippe

Problemesis, 2005

8/K4Q2/8/8/8/3B3p/R3Np2/5kN1

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Kxg1
        • 2.Qxf2#
      • 1...Kg2
        • 2.Qxf2#
      • 1...Ke1!
    • 1.Qe6?
      • 1...fxg1Q+
        • 2.Sd4#
      • 1...fxg1B+
        • 2.Sd4#
      • 1...Ke1
        • 2.Sc3#
      • 1...Kg2
        • 2.Qxh3#
      • 1...fxg1S
        • 2.Sg3#
      • 1...fxg1R
        • 2.Sc1#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sd4#
        • 2.Sf4#
      • 1...h2!
    • 1.Qg6?
      • threat
        • 2.Ra1#
      • 1...fxg1Q+
        • 2.Qxg1#
      • 1...fxg1B+
        • 2.Qxg1#
      • 1...fxg1S
        • 2.Qxg1#
      • 1...fxg1R
        • 2.Qxg1#
      • 1...Ke1!
    • 1.Qg8?
      • threat
        • 2.Ra1#
      • 1...fxg1Q+
        • 2.Qxg1#
      • 1...fxg1B+
        • 2.Qxg1#
      • 1...fxg1S
        • 2.Qxg1#
      • 1...fxg1R
        • 2.Qxg1#
      • 1...Ke1!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Ra1#
      • 1...fxg1Q+
        • 2.Qxg1#
      • 1...fxg1B+
        • 2.Qxg1#
      • 1...Ke1
        • 2.Qa1#
      • 1...fxg1S
        • 2.Qxg1#
      • 1...fxg1R
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT,XS(A)::QAB1(F),XP(b)
        • K(a);S_FLIGHT::QAR1(F),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(F);N_PINP(b)
      • Vars
        • P(b);CHECK,SBLOCK,XS(A)::B(D)+S(C)
        • K(a);P-FLIGHT::QAR(F)+S(C)
        • K(a);S_FLIGHT::QAB1(F),XP(c)
        • P(b);SBLOCK,XS(A)::B(D)+S(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • Q(F);N_PINP(b)
      • Threat
        • R(B)
      • Vars
        • P(b);CHECK,OGATE,XS(A)::QAR1(F),XQ(b)
        • P(b);CHECK,OGATE,XS(A)::QAR1(F),XB(b)
        • P(b);OGATE,XS(A)::QAR1(F),XS(b)
        • P(b);OGATE,XS(A)::QAR1(F),XR(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);N_PINP(b)
      • Threat
        • R(B)
      • Vars
        • P(b);CHECK,OGATE,XS(A)::QAR1(F),XQ(b)
        • P(b);CHECK,OGATE,XS(A)::QAR1(F),XB(b)
        • P(b);OGATE,XS(A)::QAR1(F),XS(b)
        • P(b);OGATE,XS(A)::QAR1(F),XR(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(F);N_PINP(b)
    • Threat
      • R(B)
    • Vars
      • P(b);CHECK,OGATE,XS(A)::QAR1(F),XQ(b)
      • P(b);CHECK,OGATE,XS(A)::QAR1(F),XB(b)
      • K(a);P-FLIGHT::QAR(F)
      • P(b);OGATE,XS(A)::QAR1(F),XS(b)
      • P(b);OGATE,XS(A)::QAR1(F),XR(b)
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