MESON Chess Problem Database

Problem Display
PID: 109485 (4r2b/2p4Q/1BB5/1q6/k3p3/Pp3p1K/8/1N6 w - - 0 1)

Svoboda, Rudolf

Sachova skladba, 1986

4r2b/2p4Q/1BB5/1q6/k3p3/Pp3p1K/8/1N6

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...cxb6
      • 2.Qa7#
  • Tries
    • 1.Qxe4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Rxe4!
    • 1.Qe7?
      • threat
        • 2.Qb4#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Rxe7!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Bxb5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...cxb6
        • 2.Qa7#
      • 1...b2
        • 2.Qd1#
      • 1...Re5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE,XB(D)::QAR(F)
  • Tries
    • Try
      • Q(F);CHECK,XP(d)
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::QAR(F),XB(h)
      • Refutation
        • R(g);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(h);N_GUARD::S(A),XB(h)
      • Refutation
        • R(g);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • B(E),XQ(e)
    • Vars
      • Q(e);OGATE,XB(E)::QAB(F),XQ(e)
      • P(f);OGATE,XB(D)::QAR(F)
      • P(a);OGATEB::QAB(F)
      • R(g);S_CUTB(h)::QAR(F)
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