MESON Chess Problem Database

Problem Display
PID: 180378 (3B4/3B4/2pkP1Kp/P5nR/P2Pp3/4Np2/5P2/3R4 w - - 0 1)

Lider, Valentin Viktorovich

Les Echecs Francais, 1982

3B4/3B4/2pkP1Kp/P5nR/P2Pp3/4Np2/5P2/3R4

#2

11 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sh3
      • 2.Sc4#
    • 1...Sf7
      • 2.Sc4#
    • 1...Sh7
      • 2.Sc4#
  • Tries
    • 1.Bc8?
      • 1...Sxe6
        • 2.Sc4#
      • 1...Sh3
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...Sh7
        • 2.Sc4#
      • 1...c5!
    • 1.Rb1?
      • 1...Sh3
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...Sh7
        • 2.Sc4#
      • 1...c5
        • 2.Rb6#
      • 1...Sxe6!
  • Keys
    • 1.d5!
      • 1...Kc5
        • 2.Be7#
      • 1...Ke5
        • 2.Bc7#
      • 1...Sxe6
        • 2.dxe6#
      • 1...cxd5
        • 2.Rxd5#
      • 1...c5
        • 2.Sc4#
      • 1...Sh3
        • 2.dxc6#
      • 1...Sf7
        • 2.dxc6#
      • 1...Sh7
        • 2.dxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);::S(C)
  • Tries
    • Try
      • B(J);
      • Vars
        • S(c);XP(H)::S(C)
        • S(c);::S(C)
      • Refutation
        • P(d);
    • Try
      • R(A);
      • Vars
        • S(c);::S(C)
        • P(d);OGATEB::R(A)
      • Refutation
        • S(c);XP(H)
  • Actual
    • P(E);
    • Vars
      • K(e);S_FLIGHT::B(K)
      • K(e);P_SPINS(c),S_FLIGHT::B(K)
      • S(c);OGATE,XP(H)::R(A)+P(E),XS(c)
      • P(d);OGATE,P_SPINP(d),XP(E)::R1(A),XP(d)
      • P(d);SBLOCK::S(C)
      • S(c);::R(A)+P(E),XP(d)
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