MESON Chess Problem Database

Problem Display
PID: 153036 (6RK/6p1/5Q1b/3pr3/4p1k1/6NN/5PP1/8 w - - 0 1)

Rotenberg, Jacques

Comm., Spisska Borovicka, 2014

6RK/6p1/5Q1b/3pr3/4p1k1/6NN/5PP1/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...g5
      • 2.Qf4#
  • Tries
    • 1.Rxg7+?
      • 1...Rg5
        • 2.Qf4#
      • 1...Bg5
        • 2.Qf4#
      • 1...Bxg7+!
    • 1.Qxh6?
      • threat
        • 2.Qf4#
      • 1...Rh5
        • 2.Qxh5#
      • 1...Rg5
        • 2.Qxg5#
      • 1...g5
        • 2.Qh5#
      • 1...Rf5!
  • Keys
    • 1.Qxe5!
      • threat
        • 2.Qh5#
      • 1...Kh4
        • 2.Qh5#
      • 1...Bg5
        • 2.Qxg5#
      • 1...g5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(d);N_SPINP(f),S_CUTB(e)::QAR1(E)
    • B(e);N_GUARD::QAR1(E),XB(e)
    • P(f);S_CUTB(e)::QAR1(E)
  • Tries
    • Try
      • R(F);CHECK,XP(f)
      • Vars
        • R(d);P_SPINR(d)::QAR1(E)
        • B(e);P_SPINB(e)::QAR1(E)
      • Refutation
        • B(e);CHECK,XR(F)
    • Try
      • Q(E);XB(e)
      • Threat
        • QAR1(E)
      • Vars
        • R(d);N_GUARD,P_PINQ(E)::QAB1(E),XR(d)
        • R(d);N_GUARD,N_SPINP(f)::QAR1(E),XR(d)
        • P(f);S_CUTR(d)::QAB1(E)
      • Refutation
        • R(d);
  • Actual
    • Q(E);XR(d)
    • Threat
      • QAB1(E)
    • Vars
      • K(b);N_SPINP(f),P-FLIGHT::QAR1(E)
      • B(e);N_GUARD,N_SPINP(f)::QAR1(E),XB(e)
      • P(f);S_CUTB(e)::QAR1(E)
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