MESON Chess Problem Database

Problem Display
PID: 24976 (8/8/7K/8/2N5/7p/7R/2Q1bk2 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

1st HM., Goteborg Postens, 1993

8/8/7K/8/2N5/7p/7R/2Q1bk2

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Ra2?
      • 1...Kg1
        • 2.Qxe1#
      • 1...h2!
    • 1.Rb2?
      • 1...Kg1
        • 2.Qxe1#
      • 1...h2!
    • 1.Rc2?
      • 1...Kg1
        • 2.Qxe1#
      • 1...h2!
    • 1.Rd2?
      • 1...Kg1
        • 2.Qxe1#
      • 1...h2!
    • 1.Re2?
      • threat
        • 2.Qxe1#
      • 1...Kg1
        • 2.Qxe1#
      • 1...Kxe2!
    • 1.Rf2+?
      • 1...Kg1
        • 2.Qxe1#
      • 1...Kxf2!
    • 1.Qf4+?
      • 1...Bf2
        • 2.Qxf2#
      • 1...Kg1!
  • Keys
    • 1.Qe3!
      • 1...Bf2
        • 2.Qxf2#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Bc3
        • 2.Qf2#
      • 1...Bg3
        • 2.Sd2#
      • 1...Bb4
        • 2.Qf2#
      • 1...Bh4
        • 2.Sd2#
      • 1...Ba5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Threat
        • QAR1(A),XB(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XB(a)
      • Refutation
        • K(b);N_SPINB(a),P-FLIGHT,XR(B)
    • Try
      • Q(A);CHECK,N_PINB(a)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);N_PINB(a)
    • Vars
      • B(a);N_GUARD::QAR1(A),XB(a)
      • B(a);N_GUARD,P_PINQ(A)::S(C),XB(a)
      • B(a);N_GUARD::QAR1(A)
      • B(a);N_GUARD::S(C)
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