MESON Chess Problem Database

Problem Display
PID: 241207 (2Q3bn/1p6/1P1PRp2/2pk1N2/1P1p1P2/pNp5/q2rP3/4bK2 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Sachsische Zeitung, 1988

2Q3bn/1p6/1P1PRp2/2pk1N2/1P1p1P2/pNp5/q2rP3/4bK2

#2

10 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Se3#
    • 1...cxb4
      • 2.Se7#
    • 1...c4
      • 2.Se7#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Se7#
      • 1...Bxe6
        • 2.Qxb7#
      • 1...d3
        • 2.e4#
      • 1...Sg6!
    • 1.e4+?
      • 1...dxe4 ep
        • 2.Sxe3#
      • 1...Kc4!
  • Keys
    • 1.Sbxd4!
      • threat
        • 2.Qxc5#
      • 1...Kc4
        • 2.Qxc5#
      • 1...Rxd4
        • 2.Se3#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...cxb4
        • 2.e4#
      • 1...cxd4
        • 2.Se7#
      • 1...Qc4
        • 2.Qxb7#
      • 1...c4
        • 2.Qxb7#
        • 2.Qc5#
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(f);N_GUARD::S(F)
    • P(g);XP(D)::S(F)
    • P(g);::S(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(F)
      • Vars
        • B(k);SBLOCK,XR(I)::QAB(J),XP(j)
        • P(f);N_GUARD::P(B)
      • Refutation
        • S(l);
    • Try
      • P(B);CHECK
      • Vars
        • P(f);EP,XP(B)::S(F),XP(f)
      • Refutation
        • K(h);P_SPINP(g),S_FLIGHT
  • Actual
    • S(C);XP(f)
    • Threat
      • QAR1(J),XP(g)
    • Vars
      • K(h);P_SPINP(g),S_FLIGHT::QAR1(J),XP(g)
      • R(c);SBLOCK,XS(C)::S(F)
      • B(k);OGATE,XR(I)::QAB1(J),XB(k)
      • P(g);XP(D)::P(B)
      • P(g);SBLOCK,XS(C)::S(F)
      • Q(b);P_PINP(B),SBLOCK::QAB(J),XP(j)
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