MESON Chess Problem Database

Problem Display
PID: 140863 (4B2B/2ppp3/R1qbkp2/2r1p3/4Pp1K/3N1N2/8/3Q4 w - - 0 1)

Subotic, Miroslav

Liga Problemista, 1995/1

4B2B/2ppp3/R1qbkp2/2r1p3/4Pp1K/3N1N2/8/3Q4

#2

8 + 10

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Sxc5#
    • 1...Qb7
      • 2.Sxc5#
    • 1...Qa8
      • 2.Sxc5#
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Sxc5+?
      • 1...Bxc5
        • 2.Qd5#
        • 2.Qxd7#
      • 1...Qxc5!
    • 1.Sfxe5?
      • threat
        • 2.Bf7#
      • 1...Rxe5
        • 2.Sxf4#
      • 1...Bxe5
        • 2.Sxc5#
      • 1...fxe5
        • 2.Qg4#
      • 1...Qxe4!
  • Keys
    • 1.Sdxe5!
      • threat
        • 2.Bf7#
      • 1...Qxe4
        • 2.Bxd7#
      • 1...Rxe5
        • 2.Sd4#
      • 1...Bxe5
        • 2.Qxd7#
      • 1...fxe5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(d);N_GUARD,P_SPINB(e)::S(B),XR(b)
    • P(g);N_GUARD::S(C)
  • Tries
    • Try
      • S(B);CHECK,XR(b)
      • Refutation
        • Q(d);P_SPINB(e),XS(B)
    • Try
      • S(C);XP(c)
      • Threat
        • B(G)
      • Vars
        • R(b);SBLOCK,XS(C)::S(B),XP(a)
        • B(e);N_GUARD,P_SPINQ(d),SBLOCK,XS(C)::S(B),XR(b)
        • P(g);N_GUARD,XS(C)::QAB(A)
      • Refutation
        • Q(d);P_SPINB(e),XP(D)
  • Actual
    • S(B);XP(c)
    • Threat
      • B(G)
    • Vars
      • Q(d);N_GUARD,P_SPINB(e),XP(D)::B(G),XP(i)
      • R(b);SBLOCK,XS(B)::S(C)
      • B(e);OGATE,P_SPINQ(d),XS(B)::QAB1(A),XP(i)
      • P(g);N_GUARD,XS(B)::S(C)
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