MESON Chess Problem Database

Problem Display
PID: 189442 (8/8/8/4Q3/6N1/4p3/4p2K/5k2 w - - 0 1)

Decker, Adolfph L

Tidskrift for Schack, 1911

8/8/8/4Q3/6N1/4p3/4p2K/5k2

#2

3 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe3+?
      • 1...Kf2
        • 2.Qg3#
      • 1...Ke1!
    • 1.Qg3?
      • threat
        • 2.Sxe3#
        • 2.Qg1#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1B
        • 2.Qg2#
      • 1...e1R
        • 2.Qg2#
        • 2.Qf3#
      • 1...e1S!
    • 1.Qxe3?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Qc1#
      • 1...e1S
        • 2.Qf2#
      • 1...e1B
        • 2.Qd3#
      • 1...e1R
        • 2.Qf2#
        • 2.Qf3#
      • 1...e1Q!
  • Keys
    • 1.Qb2!
      • 1...Ke1
        • 2.Qc1#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1S
        • 2.Sxe3#
      • 1...e1B
        • 2.Sxe3#
        • 2.Qg2#
      • 1...e1R
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
        • P(b);::QAR1(C)
        • P(b);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(b);OGATE,SBLOCK::QAB1(C)
      • P(b);SBLOCK::S(B),XP(c)
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