MESON Chess Problem Database

Problem Display
PID: 35551 (2K5/3p3N/4kp2/R3P3/2R5/3Q2P1/B7/3q4 w - - 0 1)

Kuznetsov, Anatoly Grigorievich

1st Prize, Kanonik MT (Chervoni Girnik), 1993

2K5/3p3N/4kp2/R3P3/2R5/3Q2P1/B7/3q4

#2

8 + 4

3705 Album Russia (1992-1994) 2000
1232 Kudesnik 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Qxd7#
    • 1...Qe2
      • 2.Qxd7#
    • 1...Qb3
      • 2.Qxd7#
    • 1...Qf3
      • 2.Qxd7#
    • 1...Qg4
      • 2.Qxd7#
    • 1...Qh5
      • 2.Qxd7#
    • 1...Qa1
      • 2.Qxd7#
    • 1...Qb1
      • 2.Qxd7#
    • 1...Qc1
      • 2.Qxd7#
    • 1...Qe1
      • 2.Qxd7#
    • 1...Qf1
      • 2.Qxd7#
    • 1...Qg1
      • 2.Qxd7#
    • 1...Qh1
      • 2.Qxd7#
  • Tries
    • 1.Rc2+?
      • 1...d5
        • 2.exd5 ep#
      • 1...Ke7!
  • Keys
    • 1.Re4+!
      • 1...Kf5
        • 2.Rf4#
      • 1...Ke7
        • 2.exf6#
      • 1...Qb3
        • 2.Qxd7#
      • 1...d5
        • 2.exd5 ep#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD,P_PINR(D)::QAB1(B),XP(d)
    • Q(a);N_GUARD::QAB1(B),XP(d)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(d);OGATE,P_SPINP(d)::B(A)+P(F),XP(d),EP
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(D);CHECK
    • Vars
      • K(b);S_FLIGHT::QAB(B)+R(D),DCHECK
      • K(b);P-FLIGHT::R(D)+P(F)DCHECK,XP(c)
      • Q(a);P_SPINQ(a)::QAB1(B),XP(d)
      • P(d);OGATE,P_SPINP(d)::R(D)+P(F)DCHECK,XP(d),EP
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