MESON Chess Problem Database

Problem Display
PID: 129718 (7Q/1R6/p3N3/P1p2p2/2bpkP2/5R1P/8/4K3 w - - 0 1)

Grabowski, Kazimierz

Szachista Polski, 1920

7Q/1R6/p3N3/P1p2p2/2bpkP2/5R1P/8/4K3

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sg5#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...cxd4!
  • Keys
    • 1.Qa8!
      • 1...Kxf3
        • 2.Rb3#
      • 1...Kd5
        • 2.Rb6#
      • 1...Bxe6
        • 2.Re7#
      • 1...Bf1
        • 2.Rb1#
        • 2.Rb2#
        • 2.Rbb3#
        • 2.Rb4#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Ra7#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Rb8#
      • 1...Ba2
        • 2.Rbb3#
      • 1...Be2
        • 2.Rb1#
        • 2.Rb2#
        • 2.Rbb3#
        • 2.Rb4#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Ra7#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Rb8#
      • 1...Bb3
        • 2.Rbxb3#
      • 1...Bd3
        • 2.Rb1#
        • 2.Rb2#
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Ra7#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Rb8#
      • 1...Bb5
        • 2.Rxb5#
      • 1...Bd5
        • 2.Sg5#
      • 1...d3
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::S(F)
  • Tries
    • Try
      • S(F);XP(b)
      • Threat
        • QAR1(H)
      • Vars
        • K(c);S_FLIGHT::QAR1(H)
      • Refutation
        • P(d);XS(F)
  • Actual
    • Q(H);
    • Vars
      • K(c);S_FLIGHT,XR(B)::QAB(H)+R(G),DCHECK
      • K(c);S_FLIGHT::QAB(H)+R(G)
      • B(a);N_GUARD,XS(F)::QAB(H)+R(G)
      • B(a);N_GUARD::QAB(H)+R(G)
      • B(a);N_GUARD::QAB(H)+R(G),XB(a)
      • B(a);SBLOCK::S(F)
      • P(b);S_CUTB(a)::QAB(H)+R(G)
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