MESON Chess Problem Database

Problem Display
PID: 162186 (2nK4/2PBp3/r7/2Pk4/p2N4/1N1p1P2/Pn6/b1rqR1Q1 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Postsjakk, 1971

2nK4/2PBp3/r7/2Pk4/p2N4/1N1p1P2/Pn6/b1rqR1Q1

#2

10 + 10

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Be6#
    • 1...Re6
      • 2.Bxe6#
    • 1...Ra7
      • 2.Be6#
    • 1...Ra8
      • 2.Be6#
    • 1...Sb6
      • 2.Be6#
    • 1...Sd6
      • 2.Be6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qd4#
      • 1...Sc4
        • 2.Sb4#
      • 1...e5
        • 2.Se3#
      • 1...dxc2!
    • 1.Sc6?
      • threat
        • 2.Qd4#
      • 1...Rc4
        • 2.Re5#
      • 1...Sc4
        • 2.Sb4#
      • 1...e5
        • 2.Qg8#
      • 1...Kc4!
    • 1.Re5+?
      • 1...Kxe5
        • 2.Qg5#
      • 1...Kc4!
    • 1.Qg8+?
      • 1...Re6
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...e6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qd4#
      • 1...Rc4
        • 2.Qg5#
      • 1...Sc4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(h);N_GUARD::B(I)
    • R(h);N_GUARD::B(I),XR(h)
    • S(j);S_CUTR(h)::B(I)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • K(g);S_FLIGHT::QAR1(B)
        • S(d);SBLOCK::S(F)
        • P(i);SBLOCK::S(F)
      • Refutation
        • P(e);XS(F)
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • R(b);SBLOCK::R1(A)
        • S(d);SBLOCK::S(F)
        • P(i);N_GUARD::QAB(B)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(g);P-FLIGHT,XR(A)::QAR2(B)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • S(F);
    • Threat
      • QAR1(B)
    • Vars
      • K(g);S_FLIGHT::QAR1(B)
      • R(b);SBLOCK::QAR(B)
      • S(d);SBLOCK::S(F)
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