MESON Chess Problem Database

Problem Display
PID: 101439 (6K1/pb5B/qp1B1R2/p2k2p1/3N2Nb/1PnR3r/2P4p/8 w - - 0 1)

Sparke, Arthur M

Good Companions (December), 1916

6K1/pb5B/qp1B1R2/p2k2p1/3N2Nb/1PnR3r/2P4p/8

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxe3#
    • 1...Bg3
      • 2.Se3#
    • 1...Sb5
      • 2.c4#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Rd6#
      • 1...Bg3
        • 2.Sb5#
      • 1...Se4
        • 2.Rf5#
      • 1...Sb5
        • 2.c4#
      • 1...b5
        • 2.Sf3#
      • 1...axb4!
    • 1.Rf5+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Rxa5#
        • 2.Rb5#
        • 2.Rc5#
        • 2.Rxg5#
      • 1...Kxd6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Rd6#
      • 1...Bg3
        • 2.Sb5#
      • 1...Se4
        • 2.Rf5#
      • 1...Sb5
        • 2.c4#
      • 1...b5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::S(E),XR(c)
    • B(d);S_CUTR(c)::S(E)
    • S(b);OGATE::P(A)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • B(d);S_CUTR(c)::R(C)+S(D)
        • S(b);SBLOCK::R(G)
        • S(b);OGATE::P(A)
        • P(i);S_CUTQ(h)::R(C)+S(D)
      • Refutation
        • P(e);XB(F)
    • Try
      • R(G);CHECK
      • Refutation
        • K(f);P-FLIGHT,XB(F)
  • Actual
    • B(F);
    • Threat
      • R1(G)
    • Vars
      • B(d);S_CUTR(c)::R(C)+S(D)
      • S(b);SBLOCK::R(G)
      • S(b);OGATE::P(A)
      • P(i);S_CUTQ(h)::R(C)+S(D)
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