MESON Chess Problem Database

Problem Display
PID: 134444 (b4n2/4Q3/3r1N2/1Pk3BR/2P2n2/1K6/5P2/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Sachsische Zeitung, 1999

b4n2/4Q3/3r1N2/1Pk3BR/2P2n2/1K6/5P2/8

#2

8 + 5

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qe3#
    • 1...Bd5
      • 2.Qe3#
    • 1...Bc6
      • 2.Qa7#
    • 1...Se2
      • 2.Be3#
    • 1...Sg2
      • 2.Be3#
    • 1...Sd3
      • 2.Be3#
    • 1...Sh3
      • 2.Be3#
    • 1...Sd5
      • 2.Be3#
    • 1...Sxh5
      • 2.Be3#
    • 1...S4e6
      • 2.Be3#
    • 1...S4g6
      • 2.Be3#
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Sxd7!
    • 1.Bxf4+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Bd5
        • 2.Be3#
        • 2.Qe3#
      • 1...Kb6!
    • 1.Bh6+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Bd5
        • 2.Qe3#
      • 1...Sd5
        • 2.Be3#
        • 2.Qe3#
      • 1...Sxh5
        • 2.Be3#
      • 1...Kb6!
  • Keys
    • 1.Se8!
      • threat
        • 2.Qxd6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kb6
        • 2.Qc7#
      • 1...Bd5
        • 2.Qe3#
      • 1...Bc6
        • 2.Qa7#
      • 1...Sd5
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(b);N_SPINR(c),S_FLIGHT::QAB1(H)
    • B(d);P_PINP(C)::QAB(H)
    • B(d);::QAB(H)
    • S(a);OGATE::R(F)+B(E),DCHECK
    • S(a);OGATE::B(E)
    • S(a);OGATE,XR(F)::B(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINR(c),S_FLIGHT::QAB1(H)
      • Refutation
        • S(e);XS(G)
    • Try
      • B(E);CHECK,XS(a)
      • Vars
        • K(b);N_SPINR(c),S_FLIGHT::QAB1(H)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_SPINR(c),S_FLIGHT::QAB1(H)
        • B(d);P_PINP(C),P_SPINB(d)::QAB(H)
        • S(a);OGATE,XR(F)::B(E)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • QAB1(H),XR(c)
    • Vars
      • K(b);N_SPINR(c),S_FLIGHT::QAB1(H)
      • B(d);P_PINP(C)::QAB(H)
      • B(d);::QAB(H)
      • S(a);OGATE::B(E)
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