MESON Chess Problem Database

Problem Display
PID: 233952 (4R3/1B2NKp1/1n2Np2/3r2rR/4kp2/1P6/p2b2P1/B2Q2n1 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Skakbladet, 1967

4R3/1B2NKp1/1n2Np2/3r2rR/4kp2/1P6/p2b2P1/B2Q2n1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qd4#
    • 1...Be1
      • 2.Qd4#
    • 1...Be3
      • 2.Qc2#
    • 1...Bb4
      • 2.Qd4#
    • 1...Ba5
      • 2.Qd4#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
  • Tries
    • 1.Qe2+?
      • 1...Be3
        • 2.Sc5#
        • 2.Qc2#
      • 1...Sxe2!
    • 1.Qxd2?
      • threat
        • 2.Sc5#
        • 2.Qd4#
      • 1...Se2
        • 2.Sc5#
        • 2.Qxe2#
      • 1...Sf3
        • 2.Sc5#
        • 2.Qe2#
      • 1...Sa4
        • 2.Qd4#
      • 1...Sd7
        • 2.Qd4#
      • 1...Rxg2!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qc2#
      • 1...Kd3
        • 2.Sxf4#
      • 1...Kxf5
        • 2.Sxg7#
      • 1...Rxg2
        • 2.Sc5#
      • 1...Rxf5
        • 2.Sc5#
      • 1...Rg3
        • 2.Sc5#
      • 1...Bc3
        • 2.Sed4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • B(c);OGATE::QAR1(B)
    • B(c);SBLOCK::QAB(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);XB(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::QAR1(B)
      • Refutation
        • R(g);XP(C)
  • Actual
    • S(H);
    • Threat
      • QAB(B)
    • Vars
      • K(d);N_SPINR(f),P_SPINB(c),S_FLIGHT::S(F),XP(e)
      • K(d);N_SPINR(f),P_SPINR(g),S_FLIGHT,XS(H)::S(F),XP(j)
      • R(g);XP(C)::R(J)+S(F),DCHECK
      • R(g);XS(H)::R(J)+S(F),DCHECK
      • R(g);::R(J)+S(F),DCHECK
      • B(c);::R(J)+S(F)
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Developed and maintained by Brian Stephenson.
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