MESON Chess Problem Database

Problem Display
PID: 163969 (1Nb2N2/1R6/4P3/bKPk4/1p2pB2/4P2n/5rR1/8 w - - 0 1)

Lukashev, Viktor Sergeevich

Sachmatija, 2006

1Nb2N2/1R6/4P3/bKPk4/1p2pB2/4P2n/5rR1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Rd2#
    • 1...Rd2
      • 2.Rxd2#
    • 1...Rf3
      • 2.Rd2#
    • 1...Bd7+
      • 2.Rxd7#
    • 1...Sg1
      • 2.Rg5#
    • 1...Sxf4
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxg5#
  • Tries
    • 1.Sbd7?
      • threat
        • 2.Sf6#
      • 1...Bxd7+
        • 2.Rxd7#
      • 1...Rxf4
        • 2.Rd2#
      • 1...Sxf4
        • 2.Rg5#
      • 1...Bd8!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Rxf4
        • 2.Rd2#
      • 1...Sxf4
        • 2.Rg5#
      • 1...Bd8
        • 2.Sxb4#
      • 1...Bd7
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(a);OGATE::R(A)
    • R(a);OGATE::R(A),XR(a)
    • B(g);CHECK,N_GUARD::R(G),XB(g)
    • S(b);N_GUARD::R(A)
    • S(b);N_GUARD,XB(C)::R(A)
    • S(b);N_GUARD::R(A),XS(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • B(g);CHECK,OGATE,XS(H)::R(G),XB(g)
        • R(a);OGATE,XB(C)::R(A)
        • S(b);N_GUARD,XB(C)::R(A)
      • Refutation
        • B(e);
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • R(a);OGATE,XB(C)::R(A)
      • S(b);N_GUARD,XB(C)::R(A)
      • B(e);N_GUARD::S(H),XP(c)
      • B(g);N_GUARD,P_PINS(H)::R(G),XB(g)
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