MESON Chess Problem Database

Problem Display
PID: 218809 (8/8/8/7Q/8/5pK1/4b2N/6k1 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1978

8/8/8/7Q/8/5pK1/4b2N/6k1

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Sxf3#
    • 1...Bf1
      • 2.Sxf3#
  • Tries
    • 1.Sxf3+?
      • 1...Kf1
        • 2.Qh1#
        • 2.Qh3#
      • 1...Bxf3!
    • 1.Qxf3?
      • threat
        • 2.Qg2#
      • 1...Bf1
        • 2.Qxf1#
      • 1...Bxf3!
  • Keys
    • 1.Qh3!
      • 1...Kh1
        • 2.Sxf3#
      • 1...Bd1
        • 2.Qf1#
      • 1...Bf1
        • 2.Sxf3#
        • 2.Qxf1#
      • 1...Bd3
        • 2.Sxf3#
      • 1...Bc4
        • 2.Sxf3#
      • 1...Bb5
        • 2.Sxf3#
      • 1...Ba6
        • 2.Sxf3#
      • 1...f2
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR(C)+S(A),XP(c)
    • B(b);N_GUARD,SBLOCK::S(A),XP(c)
  • Tries
    • Try
      • S(A);CHECK,XP(c)
      • Refutation
        • B(b);XS(A)
    • Try
      • Q(C);XP(c)
      • Threat
        • QAR1(C)
      • Vars
        • B(b);N_GUARD::QAR1(C),XB(b)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR(C)+S(A),XP(c)
      • B(b);N_GUARD::QAR1(C)
      • B(b);N_GUARD::S(A),XP(c)
      • P(c);N_GUARD::QAR1(C)
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