MESON Chess Problem Database

Problem Display
PID: 121381 (8/2B5/p7/2k1P3/1npNbN2/2p5/7K/1Q6 w - - 0 1)

Jonsson, Hermann Leonard

Vart Land, 1894

8/2B5/p7/2k1P3/1npNbN2/2p5/7K/1Q6

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qg1#
    • 1...Sa2
      • 2.Bb6#
      • 2.Qb6#
    • 1...Sc2
      • 2.Bb6#
      • 2.Qb6#
    • 1...Sd3
      • 2.Bb6#
      • 2.Qb6#
    • 1...Sd5
      • 2.Sfe6#
    • 1...Sc6
      • 2.Sde6#
      • 2.Bb6#
      • 2.Qb6#
  • Tries
    • 1.Bd6+?
      • 1...Kxd4
        • 2.Qg1#
      • 1...Kb6!
    • 1.Qxb4+?
      • 1...Kxd4
        • 2.Qb6#
      • 1...Kxb4!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Ba7#
      • 1...Kxd4
        • 2.Qg1#
      • 1...Kb6
        • 2.Qxb4#
      • 1...Sd5
        • 2.Sfe6#
      • 1...Sc6
        • 2.Sde6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,S_FLIGHT,XS(C)::QAB(A)
    • S(b);SBLOCK::S(D)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(C)::QAB(A)
      • Refutation
        • K(e);P_SPINS(b),S_FLIGHT
    • Try
      • Q(A);CHECK,XS(b)
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT,XS(C)::QAB(A)
      • Refutation
        • K(e);S_FLIGHT,XQ(A)
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(C)::QAB(A)
      • K(e);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • S(b);SBLOCK::S(D)
      • S(b);SBLOCK::S(C)
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