MESON Chess Problem Database

Problem Display
PID: 169142 (7n/4b2Q/8/6RK/5RN1/4NB1k/5Bqr/8 w - - 0 1)

Novitski, Petr Adrinovich

Comm., Liylu-75 JT (SuperProblem), 2016

7n/4b2Q/8/6RK/5RN1/4NB1k/5Bqr/8

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Rxf3#
    • 1...Qxg4+
      • 2.Bxg4#
    • 1...Rh1
      • 2.Bxg2#
    • 1...Bxg5
      • 2.Kxg5#
    • 1...Sg6
      • 2.Kxg6#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rh4#
      • 1...Qxf3+
        • 2.Rxf3#
      • 1...Qg4+
        • 2.Bxg4#
      • 1...Qxg5+
        • 2.Kxg5#
      • 1...Qxf2
        • 2.Qf5#
      • 1...Qg3
        • 2.Rxg3#
      • 1...Sg6
        • 2.Kxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(a);OGATE,P_PINS(E),XB(C)::R(D),XQ(a)
    • Q(a);CHECK,OGATE,XS(E)::B(C),XQ(a)
    • R(b);N_GUARD::B(C),XQ(a)
    • B(d);XR(F)::QAR(H)+K(G),XB(d)
    • S(e);::QAR(H)+K(G),XS(e)
  • Actual
    • S(E);
    • Threat
      • R1(D)
    • Vars
      • Q(a);CHECK,OGATE,XB(C)::R(D),XQ(a)
      • Q(a);CHECK,N_GUARD::B(C),XQ(a)
      • Q(a);CHECK,XR(F)::QAR(H)+K(G),XQ(a)
      • Q(a);N_GUARD,XB(A)::QAB(H)
      • Q(a);N_GUARD::R1(F),XQ(a)
      • S(e);::QAR(H)+K(G),XS(e)
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