MESON Chess Problem Database

Problem Display
PID: 230280 (7K/3N4/2P5/3k4/3N2P1/1R6/B5R1/7Q w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Zadachi i Etyudi, 2000

7K/3N4/2P5/3k4/3N2P1/1R6/B5R1/7Q

#2

9 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...Kc4
        • 2.Rc2#
      • 1...Ke4
        • 2.Rf2#
      • 1...Ke6
        • 2.Rb1#
        • 2.Rbb2#
        • 2.Ra3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rf3#
        • 2.Rbg3#
        • 2.Rh3#
        • 2.Rb4#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Rb7#
        • 2.Rb8#
      • 1...Kxc6!
    • 1.Re2+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kc4!
    • 1.Re3+?
      • 1...Kd6
        • 2.Qh2#
      • 1...Kxd4!
    • 1.Qb1?
      • 1...Kc4
        • 2.Rd3#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kd6!
    • 1.Qh5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxd4!
  • Keys
    • 1.Sb5!
      • 1...Kc4
        • 2.Rc2#
      • 1...Ke4
        • 2.Rf2#
      • 1...Kxc6
        • 2.Rd2#
      • 1...Ke6
        • 2.Re3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::R(C)
        • K(a);S_FLIGHT::QAB(A)+R(C)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(E)::QAR1(A)
        • K(a);P-FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::B(B)+R(D)
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::R(C)
      • K(a);S_FLIGHT::QAB(A)+R(C)
      • K(a);S_FLIGHT,XP(G)::QAB(A)+R(C)
      • K(a);S_FLIGHT::B(B)+R(D),DCHECK
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