MESON Chess Problem Database

Problem Display
PID: 101367 (b3N3/3p4/BK1PP3/1n1k1n2/R3pP2/3P2p1/2P5/3Q4 w - - 0 1)

Janet, Frank

Good Companions, 1919

b3N3/3p4/BK1PP3/1n1k1n2/R3pP2/3P2p1/2P5/3Q4

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sbd4
      • 2.Bc4#
    • 1...Sbxd6
      • 2.Sc7#
    • 1...dxe6
      • 2.dxe4#
  • Tries
    • 1.Qh5?
      • threat
        • 2.Qxf5#
      • 1...Sxd6
        • 2.Sc7#
      • 1...dxe6
        • 2.dxe4#
      • 1...Sd4
        • 2.Bc4#
      • 1...Kxe6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxf5#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Sbxd6
        • 2.Sc7#
      • 1...Sfxd6
        • 2.Sf6#
      • 1...dxe6
        • 2.dxe4#
      • 1...Sbd4
        • 2.Bc4#
      • 1...Se3
        • 2.dxe4#
      • 1...Sfd4
        • 2.c4#
      • 1...Sh4
        • 2.dxe4#
      • 1...Sh6
        • 2.dxe4#
      • 1...Se7
        • 2.dxe4#
      • 1...Sg7
        • 2.dxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,SBLOCK::B(F)
    • S(c);N_GUARD,SBLOCK,XP(H)::S(J)
    • P(f);SBLOCK,XP(I)::QAR(A)+P(C)DCHECK,XP(b)
  • Tries
    • Try
      • Q(A);P_PINS(e)
      • Threat
        • QAR2(A),XS(e)
      • Vars
        • S(c);N_GUARD,SBLOCK,XP(H)::S(J)
        • P(f);SBLOCK,XP(I)::P(C),XP(b)
        • S(c);OGATE,SBLOCK::B(F)
      • Refutation
        • K(d);N_SPINS(e),S_FLIGHT,XP(I)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A),XS(e)
    • Vars
      • K(d);OGATEB,P_SPINS(e),S_FLIGHT,XP(I)::QAB(A)
      • S(c);N_GUARD,SBLOCK,XP(H)::S(J)
      • S(e);SBLOCK,XP(H)::S(J)
      • P(f);SBLOCK,XP(I)::P(C),XP(b)
      • S(c);OGATE,SBLOCK::B(F)
      • S(e);::P(C),XP(b)
      • S(e);SBLOCK::P(B)
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