MESON Chess Problem Database

Problem Display
PID: 195108 (6Q1/2p4n/2BPNR2/3bk3/8/pp3p2/pr1R1N1K/B7 w - - 0 1)

Barnett, Bernard

Densmore MT (Pittsburgh Gazette-Times), 1918

6Q1/2p4n/2BPNR2/3bk3/8/pp3p2/pr1R1N1K/B7

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Sg4#
    • 1...Be4
      • 2.Sg4#
    • 1...Bxe6
      • 2.Qxe6#
  • Tries
    • 1.Sg4+?
      • 1...Ke4
        • 2.Sc5#
        • 2.Bxd5#
        • 2.Rf4#
        • 2.Qxh7#
        • 2.Qg6#
      • 1...Kxd6!
    • 1.Qf7?
      • threat
        • 2.Rxd5#
      • 1...Kxd6
        • 2.Qxc7#
      • 1...Bxc6
        • 2.Rf5#
      • 1...Bxe6
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Bc4
        • 2.Sg4#
        • 2.Rf5#
      • 1...Be4
        • 2.Sg4#
      • 1...Sxf6!
  • Keys
    • 1.Sd4!
      • 1...Kxf6
        • 2.Sg4#
      • 1...Rxd2
        • 2.Sxf3#
      • 1...Bxc6
        • 2.Qe6#
      • 1...Bxg8
        • 2.Sg4#
      • 1...Sxf6
        • 2.Qg3#
      • 1...cxd6
        • 2.Rf5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Rb1
        • 2.Sxf3#
      • 1...Rc2
        • 2.Sxf3#
      • 1...Bc4
        • 2.Sg4#
      • 1...Be4
        • 2.Sg4#
        • 2.Qe6#
      • 1...Bf7
        • 2.Sg4#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sf8
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • B(f);::S(C)
    • B(f);OGATE,XS(G)::QAR1(I),XB(f)
  • Tries
    • Try
      • S(C);CHECK,P_SPINR(B)
      • Refutation
        • K(g);N_SPINR(b),P_SPINB(f),S_FLIGHT,XP(F)
    • Try
      • Q(I);
      • Threat
        • R1(B),XB(f)
      • Vars
        • K(g);N_SPINR(b),OGATEB,P_SPINB(f),S_FLIGHT,XP(F)::QAB1(I),XP(h)
        • B(f);XB(E)::R1(H)
        • B(f);::S(C)
      • Refutation
        • S(i);XR(H)
  • Actual
    • S(G);N_PINR(b)
    • Vars
      • K(g);S_FLIGHT,XR(H)::S(C)
      • R(b);P_PINS(C),XR(B)::B(A)+S(G),DCHECK,XP(e)
      • B(f);N_GUARD,XB(E)::QAR1(I)
      • B(f);XQ(I)::S(C)
      • S(i);SBLOCK,XR(H)::QAB(I)
      • P(h);SBLOCK,XP(F)::R1(H)
      • B(f);N_GUARD::QAR1(I),XB(f)
      • R(b);::B(A)+S(G),DCHECK,XP(e)
      • B(f);::S(C)
      • S(i);N_GUARD::QAR2(I),XS(i)
      • S(i);N_GUARD::QAR2(I)
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