MESON Chess Problem Database

Problem Display
PID: 138253 (3qrn1B/2bbp1R1/7k/6RB/6pK/6p1/8/7Q w - - 0 1)

Maleika, Gerhard

Paslack, Rainer

Comm., Probleemblad, 2010

3qrn1B/2bbp1R1/7k/6RB/6pK/6p1/8/7Q

#2

6 + 9

102 Probleemblad 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.R5g6#
    • 1...Sg6+
      • 2.R5xg6#
    • 1...Sh7
      • 2.R5g6#
      • 2.R7g6#
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Rh5#
      • 1...Sg6+
        • 2.R5xg6#
      • 1...Bxg4
        • 2.Kxg4#
      • 1...e5
        • 2.Kxg3#
      • 1...e6!
    • 1.Bg6?
      • threat
        • 2.Rh5#
      • 1...Sxg6+
        • 2.R5xg6#
      • 1...e6
        • 2.Kxg4#
      • 1...e5!
    • 1.Rh7+?
      • 1...Sxh7
        • 2.Bg7#
        • 2.Rg6#
      • 1...Kxh7!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Rh5#
      • 1...Sg6+
        • 2.R5xg6#
      • 1...e5
        • 2.Kxg3#
      • 1...e6
        • 2.Kxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(i);N_GUARD::R1(C)
    • S(i);CHECK,N_GUARD::R1(C),XS(i)
  • Tries
    • Try
      • B(D);XP(b)
      • Threat
        • R1(C)
      • Vars
        • S(i);CHECK,N_GUARD::R1(C),XS(i)
        • B(e);XB(D)::QAR(A)+K(B),XB(e)
        • P(f);P_PINR(C)::QAR(A)+K(B),XP(a)
      • Refutation
        • P(f);P_PINR(C)
    • Try
      • B(D);
      • Threat
        • R1(C)
      • Vars
        • S(i);CHECK,OGATE,XB(D)::R1(C),XS(i)
        • P(f);P_PINR(C)::QAR(A)+K(B),XP(b)
      • Refutation
        • P(f);P_PINR(C)
    • Try
      • R(E);CHECK
      • Refutation
        • K(c);P-FLIGHT,XR(E)
  • Actual
    • B(D);
    • Threat
      • R1(C)
    • Vars
      • S(i);CHECK,N_GUARD::R1(C),XS(i)
      • P(f);P_PINR(C)::QAR(A)+K(B),XP(a)
      • P(f);P_PINR(C)::QAR(A)+K(B),XP(b)
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