MESON Chess Problem Database

Problem Display
PID: 15845 (5K2/5R2/4kB2/b1P1N3/2P1b1P1/4N3/4R3/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Rychkov, Vladimir Nikolaevich

3rd HM., Molodoi Leninets, 1988

5K2/5R2/4kB2/b1P1N3/2P1b1P1/4N3/4R3/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.cxd5#
    • 1...Bf5
      • 2.gxf5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sd4#
      • 1...Bxc2
        • 2.Sd3#
      • 1...Bc3!
    • 1.Sg2?
      • threat
        • 2.Sf4#
      • 1...Bxg2
        • 2.Sf3#
      • 1...Bd2!
    • 1.Sd5?
      • threat
        • 2.Sf4#
        • 2.Re7#
      • 1...Bd2
        • 2.Sc7#
        • 2.Re7#
      • 1...Bd8
        • 2.Sf4#
      • 1...Bxd5!
    • 1.Sf5?
      • threat
        • 2.Sd4#
        • 2.Sg7#
      • 1...Bc3
        • 2.Sg7#
      • 1...Bxf5!
    • 1.Sf3?
      • threat
        • 2.Sd4#
        • 2.Sg5#
      • 1...Bc3
        • 2.Sg5#
      • 1...Bxf3!
    • 1.Sg6?
      • threat
        • 2.Sf4#
      • 1...Bxg6
        • 2.Sf5#
      • 1...Bc7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sd4#
      • 1...Bxc6
        • 2.Sd5#
      • 1...Bc3
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE::P(C),XB(a)
    • B(a);OGATE::P(D),XB(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);XS(B)::R(A)+S(F)
      • Refutation
        • B(b);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);XS(B)::R(A)+S(F)
      • Refutation
        • B(b);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(B)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(B)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(F)
      • Refutation
        • B(a);XS(F)
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(a);XS(F)::R(A)+S(B)
      • Refutation
        • B(b);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(a);XS(F)::R(A)+S(B)
      • B(b);N_GUARD::S(F)
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