MESON Chess Problem Database

Problem Display
PID: 134483 (1R6/8/8/1PPN1p2/1nk2P2/3RBQ2/P1P2p2/3KbN2 w - - 0 1)

Shanshin, Valery Yurevich

Probleemblad, 2009

1R6/8/8/1PPN1p2/1nk2P2/3RBQ2/P1P2p2/3KbN2

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bc3
      • 2.Rxc3#
  • Tries
    • 1.Rd2?
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Sxa2
        • 2.Qe2#
      • 1...Sxc2
        • 2.Qe2#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sa6
        • 2.Qe2#
      • 1...Sc6
        • 2.Qe2#
      • 1...Sxd5!
    • 1.Qe2?
      • 1...Sxa2
        • 2.Rd2#
      • 1...Sxc2
        • 2.Rd2#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sxd5
        • 2.Rb3#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Sa6
        • 2.Rd2#
      • 1...Sc6
        • 2.Rd2#
      • 1...Bc3!
  • Keys
    • 1.Rb3!
      • 1...Sxa2
        • 2.Sb6#
      • 1...Sxc2
        • 2.Sb6#
      • 1...Sxd5
        • 2.Qe2#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Bc3
        • 2.Rxc3#
      • 1...Sd3
        • 2.Sb6#
        • 2.cxd3#
      • 1...Sa6
        • 2.Sb6#
      • 1...Sc6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD::R1(E),XB(a)
  • Tries
    • Try
      • R(E);
      • Vars
        • B(a);XR(E)::S(B),XB(a)
        • S(c);N_GUARD,XP(C)::QAB(G)
        • S(c);N_GUARD,XP(D)::QAB(G)
        • S(c);OGATE::P(D),XS(c)
        • S(c);N_GUARD::QAB(G)
      • Refutation
        • S(c);XS(K)
    • Try
      • Q(G);
      • Vars
        • S(c);N_GUARD,XP(C)::QAB(G)+R(E)
        • S(c);N_GUARD,XP(D)::QAB(G)+R(E)
        • S(c);OGATE,P_SPINS(c),XR(E)::QAB1(G),XS(c)
        • S(c);N_GUARD,SBLOCK,XS(K)::QAB(G)+R(E)
        • B(a);N_GUARD::S(B),XB(a)
        • S(c);N_GUARD::QAB(G)+R(E)
      • Refutation
        • B(a);
  • Actual
    • R(E);
    • Vars
      • S(c);XP(C)::S(K)
      • S(c);XP(D)::S(K)
      • S(c);N_GUARD,SBLOCK,XS(K)::QAB(G)
      • B(a);N_GUARD::S(B),XB(a)
      • B(a);N_GUARD::R1(E),XB(a)
      • S(c);::S(K)
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