MESON Chess Problem Database

Problem Display
PID: 203656 (8/6pK/1Q5p/3p4/b2Nkr1q/3N4/1bB1PP2/8 w - - 0 1)

Kalina, Vasily Emanuilovich

64 Shakhmatnoe obozrenie, 1924

8/6pK/1Q5p/3p4/b2Nkr1q/3N4/1bB1PP2/8

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.exf3#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Rxf5
        • 2.Qe3#
      • 1...d4
        • 2.Qe6#
      • 1...Qf6
        • 2.Sg3#
      • 1...Qe7
        • 2.Sg3#
      • 1...Qd8
        • 2.Sg3#
      • 1...Ba3
        • 2.Qe6#
      • 1...Be5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATE::P(B),XR(d)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • R(d);SBLOCK,XS(E)::QAR1(F)
      • P(f);S_CUTB(a)::QAR2(F)
      • Q(e);N_GUARD::S(E)
      • B(a);N_GUARD::QAR2(F)
      • B(a);SBLOCK::B(A)+S(D),DCHECK
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