MESON Chess Problem Database

Problem Display
PID: 67922 (3B4/3KN3/3PP3/Rp1N1P1B/3k4/Pp1Pp1P1/1P6/3R4 w - - 0 1)

Erokhin, Vladimir Alekseevich

1st HM., Sahs, 1971

3B4/3KN3/3PP3/Rp1N1P1B/3k4/Pp1Pp1P1/1P6/3R4

#2

14 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Bb6#
    • 1...b4
      • 2.Sc6#
  • Tries
    • 1.Sc6+?
      • 1...Kxd5
        • 2.Rxb5#
      • 1...Kc5!
    • 1.Be2?
      • 1...Kc5
        • 2.Bb6#
        • 2.d4#
      • 1...b4
        • 2.Sc6#
      • 1...Ke5!
    • 1.Bf3?
      • 1...Kc5
        • 2.Bb6#
      • 1...Ke5
        • 2.d4#
      • 1...b4
        • 2.Sc6#
      • 1...e2!
  • Keys
    • 1.Sxe3!
      • 1...Kxe3
        • 2.Bb6#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.Sc6#
      • 1...b4
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(d),S_FLIGHT::B(N)
    • P(d);::S(M)
  • Tries
    • Try
      • S(M);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d),XS(G)::R(F),XP(d)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • B(I);
      • Vars
        • P(d);::S(M)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(I);
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::B(N)
        • K(c);OGATE,S_FLIGHT::P(D)
        • P(d);::S(M)
      • Refutation
        • P(b);
  • Actual
    • S(G);XP(b)
    • Vars
      • K(c);S_FLIGHT,XS(G)::B(N)
      • K(c);OGATE,P_SPINP(d),S_FLIGHT::P(D)
      • K(c);P_SPINP(d),S_FLIGHT::S(M)
      • P(d);::B(N)
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