MESON Chess Problem Database

Problem Display
PID: 46100 (rB4B1/5n1r/p1b2RQ1/3PP2R/1P1kN3/2pP1pK1/2p2P2/b1N5 w - - 0 1)

Pilchenko, Viacheslav Karlovich

2nd HM., Probleemblad, 1997

rB4B1/5n1r/p1b2RQ1/3PP2R/1P1kN3/2pP1pK1/2p2P2/b1N5

#2

13 + 10

102 Probleemblad 2002
4393 Uralski Problemist 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Rd6#
    • 1...Sxe5
      • 2.Bxe5#
  • Tries
    • 1.Sb3+?
      • 1...Kxd5
        • 2.Rd6#
      • 1...Kxd3!
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Sxg5
        • 2.Sb3#
      • 1...Sd6
        • 2.Sxf3#
      • 1...Bxd5!
    • 1.Sd6?
      • threat
        • 2.Qe4#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Bxd5
        • 2.Sf5#
      • 1...Sxd6
        • 2.Sb3#
      • 1...Sg5
        • 2.Sf5#
      • 1...Rg7!
    • 1.Ba7+?
      • 1...Kxd5
        • 2.Rd6#
      • 1...Rxa7!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Bxd5
        • 2.Qb6#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);OGATEB,P-FLIGHT,P_SPINS(h),XP(G)::R1(J)
    • S(h);OGATE,XP(H)::B(L),XS(h)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h),XP(G)::R1(J)
      • Refutation
        • K(e);P-FLIGHT,XP(C)
    • Try
      • S(F);
      • Threat
        • QAR1(K)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h),XP(G)::QAB1(K)
        • S(h);XS(F)::S(A)
        • S(h);::S(F),XP(d)
      • Refutation
        • B(g);XP(G)
    • Try
      • S(F);
      • Threat
        • QAR1(K)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h),XP(G)::QAB1(K)
        • B(g);SBLOCK,XP(G)::S(F)
        • S(h);XS(F)::S(A)
        • S(h);::S(F)
      • Refutation
        • R(i);P_PINQ(K)
    • Try
      • B(L);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(h),XP(G)::R1(J)
      • Refutation
        • R(j);XB(L)
  • Actual
    • R(J);
    • Threat
      • R(J)+S(F)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINS(h),XP(G)::QAR1(K)
      • B(g);OGATE,SBLOCK,XP(G)::QAB(K)
      • S(h);::R(J)+S(F),XS(h)
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