MESON Chess Problem Database

Problem Display
PID: 101035 (8/r3p3/2pPp3/r2b2p1/3P1kpP/5PN1/3P3K/1Q6 w - - 0 1)

Jordan, Gijsbertus

Good Companions, 1921

8/r3p3/2pPp3/r2b2p1/3P1kpP/5PN1/3P3K/1Q6

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Qf1#
    • 1...Ba2
      • 2.Qe4#
    • 1...Bb3
      • 2.Qe4#
    • 1...Bxf3
      • 2.Sh5#
    • 1...Bc4
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...e5
      • 2.Qf5#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Se2#
        • 2.Sh5#
        • 2.Qe3#
      • 1...Bxf3
        • 2.Sh5#
        • 2.Qe3#
      • 1...gxh4
        • 2.Qe3#
      • 1...Ra3
        • 2.Se2#
        • 2.Sh5#
      • 1...Be4
        • 2.Qxe4#
        • 2.Qe3#
      • 1...gxf3!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qf7#
      • 1...Kxf3
        • 2.Qf7#
      • 1...Bxf3
        • 2.Sh5#
      • 1...gxf3
        • 2.Qxg5#
      • 1...gxh4
        • 2.Qxg4#
      • 1...exd6
        • 2.Qf6#
      • 1...Ba2
        • 2.Qe4#
      • 1...Bb3
        • 2.Qe4#
      • 1...Bc4
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
    • B(d);N_GUARD::QAR1(A)
    • B(d);SBLOCK,XP(D)::S(E)
    • B(d);N_GUARD::QAR1(A),XB(d)
    • P(g);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(e);XP(G)::QAB1(A)
      • Refutation
        • P(b);XP(D)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR(A)
      • B(d);SBLOCK,XP(D)::S(E)
      • P(b);SBLOCK,XP(D)::QAB1(A),XP(e)
      • P(e);OGATE,XP(G)::QAR1(A),XP(b)
      • P(i);N_GUARD,XP(H)::QAR2(A)
      • B(d);N_GUARD::QAR1(A)
      • B(d);N_GUARD::QAR1(A),XB(d)
      • P(g);N_GUARD::QAR1(A)
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Developed and maintained by Brian Stephenson.
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