MESON Chess Problem Database

Problem Display
PID: 92887 (2n4Q/1R1R4/1P1P4/2k5/P3P3/1pNp4/8/rb4bK w - - 0 1)

Scheel, Johan

Tidskrift for Schack, 1913

2n4Q/1R1R4/1P1P4/2k5/P3P3/1pNp4/8/rb4bK

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxc8#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Rbc7#
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc6
        • 2.Rbc7#
        • 2.Qxc8#
      • 1...Sxb6
        • 2.Rbc7#
      • 1...Sxd6
        • 2.Rbc7#
        • 2.Rdc7#
      • 1...Bd4
        • 2.Rbc7#
        • 2.Qxc8#
      • 1...Sa7
        • 2.Qc3#
      • 1...Se7
        • 2.Qc3#
      • 1...Rxa4!
    • 1.Rdc7+?
      • 1...Kxd6
        • 2.Qf6#
      • 1...Kb4!
  • Keys
    • 1.Sa2!
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc6
        • 2.Qxc8#
      • 1...Sxb6
        • 2.Rbc7#
      • 1...Sxd6
        • 2.Rdc7#
      • 1...Bd4
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT::QAR2(I),XS(g)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);P-FLIGHT::QAR1(I)
        • S(g);XP(E)::R(G)
        • S(g);::QAR2(I)
      • Refutation
        • R(a);XP(C)
    • Try
      • R(H);CHECK
      • Vars
        • K(f);S_FLIGHT,XP(F)::QAR2(I)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR2(I)
    • Vars
      • K(f);P-FLIGHT::QAR1(I)
      • K(f);P-FLIGHT::QAR2(I),XS(g)
      • S(g);SBLOCK,XP(E)::R(G)
      • S(g);SBLOCK,XP(F)::R(H)
      • B(c);SBLOCK::QAR(I),XS(g)
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