MESON Chess Problem Database

Problem Display
PID: 59281 (8/4p2K/3PP2n/1r3R1N/4k3/2P1N2p/4P2P/6Qn w - - 0 1)

Gulevic, M

Source?, 1963

8/4p2K/3PP2n/1r3R1N/4k3/2P1N2p/4P2P/6Qn

#2

10 + 6

1099 WCSC 1990
5396 World Chess Solving Championship 1977-1996 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rf4#
    • 1...Sg3
      • 2.Sxg3#
    • 1...exd6
      • 2.Sf6#
  • Tries
    • 1.Qb1+?
      • 1...Kxe3
        • 2.Qd3#
      • 1...Rxb1!
  • Keys
    • 1.Sc4!
      • 1...Kxf5
        • 2.Qg6#
      • 1...Rxf5
        • 2.Qd4#
      • 1...Sxf5
        • 2.Qxh1#
      • 1...exd6
        • 2.Sxd6#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rb1
        • 2.Re5#
        • 2.Qxb1#
      • 1...Rb2
        • 2.Re5#
      • 1...Rb3
        • 2.Re5#
      • 1...Rb4
        • 2.Re5#
      • 1...Ra5
        • 2.Qb1#
      • 1...Rc5
        • 2.Qb1#
      • 1...Rd5
        • 2.Rf4#
      • 1...Rb6
        • 2.Re5#
      • 1...Rb7
        • 2.Re5#
      • 1...Rb8
        • 2.Re5#
      • 1...Sf2
        • 2.Sg3#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::R1(F)
    • S(a);N_GUARD::S(G),XS(a)
    • P(f);N_GUARD,XP(H)::S(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(A)
      • Refutation
        • R(d);XQ(A)
  • Actual
    • S(E);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
      • R(d);SBLOCK,XR(F)::QAR1(A)
      • S(e);SBLOCK,XR(F)::QAB(A),XS(a)
      • P(f);XP(H)::S(E),XP(f)
      • R(d);N_GUARD::R1(F),XR(d)
      • R(d);N_GUARD::R1(F)
      • R(d);N_GUARD::QAB(A)
      • R(d);SBLOCK::R1(F)
      • S(a);N_GUARD::S(G)
      • S(a);N_GUARD::S(G),XS(a)
      • S(e);N_GUARD::QAR2(A),XS(e)
      • S(e);N_GUARD::QAR2(A)
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