MESON Chess Problem Database

Problem Display
PID: 119772 (8/K7/8/k2p4/3p1p2/PP6/2P3nb/1n1Q4 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Shakhmatnoe obozrenie, 1909

8/K7/8/k2p4/3p1p2/PP6/2P3nb/1n1Q4

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd4?
      • threat
        • 2.Qc5#
        • 2.Qb6#
        • 2.Qa4#
        • 2.Qb4#
        • 2.Qxd5#
      • 1...Kb5
        • 2.Qb6#
        • 2.Qxd5#
      • 1...Sxa3
        • 2.Qb6#
        • 2.Qa4#
      • 1...Sc3
        • 2.Qb6#
        • 2.Qb4#
      • 1...Se3
        • 2.Qc5#
        • 2.Qb6#
        • 2.Qa4#
        • 2.Qb4#
      • 1...Bg1!
  • Keys
    • 1.c4!
      • threat
        • 2.b4#
      • 1...Sxa3
        • 2.Qd2#
      • 1...dxc4
        • 2.Qh5#
      • 1...dxc4 ep
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);XP(d)
      • Threat
        • DUALS(5)
      • Refutation
        • B(c);P_PINQ(A)
  • Actual
    • P(B);
    • Threat
      • P(D)
    • Vars
      • S(a);N_GUARD,XP(C)::QAB(A)
      • P(g);OGATEB,XP(B)::QAB1(A)
      • P(d);EP,OGATE,XP(B)::QAR(A),XP(g)
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