MESON Chess Problem Database

Problem Display
PID: 276497 (B7/1R6/2K3N1/8/4k1P1/b3np2/2P1N3/6B1 w - - 0 1)

Velimirovic, Milan

Mat, 1981

B7/1R6/2K3N1/8/4k1P1/b3np2/2P1N3/6B1

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Re7#
    • 1...Be7
      • 2.Rxe7#
    • 1...Sd1
      • 2.Sg3#
    • 1...Sf1
      • 2.Sc3#
    • 1...Sg2
      • 2.Sc3#
      • 2.Sg3#
    • 1...Sc4
      • 2.Sc3#
      • 2.Sg3#
    • 1...Sxg4
      • 2.Sg3#
    • 1...Sd5
      • 2.Sg3#
    • 1...Sf5
      • 2.Sc3#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Re7#
      • 1...Kd5
        • 2.Rb6#
      • 1...Sxc2
        • 2.Rd7#
      • 1...Sxg4
        • 2.Rf7#
      • 1...Be7
        • 2.Rxe7#
      • 1...Sd5
        • 2.Sg3#
      • 1...fxe2!
    • 1.Rb4+?
      • 1...Sc4
        • 2.Kb5#
        • 2.Kc5#
        • 2.Kc7#
        • 2.Kd7#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Rxc4#
      • 1...Bxb4!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Rb4#
      • 1...Kd5
        • 2.Rc7#
      • 1...Sxc2
        • 2.Rb3#
      • 1...Sxg4
        • 2.Rb5#
      • 1...Bb4
        • 2.Rxb4#
      • 1...Sd5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(a);N_GUARD::R(G)
    • B(a);N_GUARD::R(G),XB(a)
    • S(b);::S(C)
    • S(b);XP(D)::S(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • B(H)+R(G),DCHECK
      • Vars
        • K(d);S_CUTS(b),S_FLIGHT::B(H)+R(G)
        • S(b);N_GUARD,XP(B)::B(H)+R(G)
        • S(b);N_GUARD,XP(D)::B(H)+R(G)
        • B(a);::B(H)+R(G),DCHECK,XB(a)
        • S(b);SBLOCK::S(C)
      • Refutation
        • P(c);XS(C)
    • Try
      • R(G);CHECK
      • Refutation
        • B(a);XR(G)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • K(d);S_CUTS(b),S_FLIGHT::B(H)+R(G)
      • S(b);N_GUARD,XP(B)::B(H)+R(G)
      • S(b);N_GUARD,XP(D)::B(H)+R(G)
      • B(a);::B(H)+R(G),DCHECK,XB(a)
      • S(b);SBLOCK::S(C)
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