MESON Chess Problem Database

Problem Display
PID: 240290 (8/2p2B2/1n6/1NpPk1b1/3rPRK1/2Q1p3/3P4/1b2R3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Problem-Forum, 2004

8/2p2B2/1n6/1NpPk1b1/3rPRK1/2Q1p3/3P4/1b2R3

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...exd2
      • 2.Rf5#
    • 1...c4
      • 2.Qxd4#
  • Tries
    • 1.Qxc5?
      • threat
        • 2.Qxd4#
        • 2.Qxc7#
      • 1...Rxd2
        • 2.Qxc7#
      • 1...Rxe4
        • 2.Qxc7#
      • 1...Rxd5
        • 2.d4#
      • 1...Bxf4
        • 2.Qxd4#
        • 2.Qe7#
      • 1...Sxd5
        • 2.Qxd4#
      • 1...Rd3
        • 2.Qxc7#
      • 1...Ra4
        • 2.Qxc7#
      • 1...Rb4
        • 2.Qxc7#
      • 1...Be7
        • 2.Qxd4#
        • 2.Qxe7#
      • 1...Bd8
        • 2.Qxd4#
      • 1...Sc4
        • 2.Qxd4#
      • 1...Sa8
        • 2.Qxd4#
      • 1...Sc8
        • 2.Qxd4#
      • 1...c6
        • 2.Qxd4#
        • 2.Qd6#
      • 1...Rc4!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Rf5#
      • 1...Rxe4
        • 2.Qc3#
      • 1...Bxf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(b);XP(B)::R1(E)
    • P(d);N_GUARD::QAB1(C),XR(c)
  • Tries
    • Try
      • Q(C);N_PINR(c),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(B)::QAB(C),XP(h)
        • R(c);P_PINR(E),XP(D)::QAB(C),XP(h)
        • R(c);OGATE,P_SPINR(c),XP(H)::P(B)
        • S(g);P_SPINS(g),XP(H)::QAB1(C),XR(c)
        • R(c);::QAB(C),XP(h)
        • B(f);::QAB1(C),XR(c)
        • S(g);::QAB1(C),XR(c)
      • Refutation
        • R(c);
  • Actual
    • Q(C);N_PINR(c),XP(b)
    • Threat
      • R1(E)
    • Vars
      • R(c);OGATEB,P_PINR(E),P_SPINR(c),XP(D)::QAB(C)
      • B(f);OGATE,XR(E)::QAB1(C),XB(f)
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