MESON Chess Problem Database

Problem Display
PID: 235689 (2RR2b1/2n3B1/Q2r1N1K/4Pp2/1p1k4/4p3/2r1p1B1/2N5 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Mat, 1989

2RR2b1/2n3B1/Q2r1N1K/4Pp2/1p1k4/4p3/2r1p1B1/2N5

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qxd6#
    • 1...Se6
      • 2.Qxd6#
  • Tries
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Qxe3#
        • 2.Qxd6#
      • 1...Kc5!
  • Keys
    • 1.e6!
      • threat
        • 2.Sd7#
      • 1...Kc3
        • 2.Se4#
      • 1...Kc5
        • 2.Sb3#
      • 1...Ke5
        • 2.Qxd6#
      • 1...Sxe6
        • 2.Qxd6#
      • 1...Rc5
        • 2.Sd5#
      • 1...Rd5
        • 2.Se4#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Sd5
        • 2.Sxd5#
      • 1...Se8
        • 2.Sxe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINR(g),S_FLIGHT,XP(C)::QAB1(D),XR(g)
    • S(h);N_GUARD,N_PINS(E),S_CUTB(i)::QAR2(D),XR(g)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(e);N_SPINR(g),P_SPINS(h),S_FLIGHT
  • Actual
    • P(C);N_SPINS(E)
    • Threat
      • B(G)+S(E)
    • Vars
      • K(e);N_SPINR(g),P_SPINS(h),S_FLIGHT::B(G)+S(E),DCHECK
      • K(e);N_SPINR(g),P_SPINS(h),S_FLIGHT::S(A)
      • K(e);N_SPINR(g),S_FLIGHT::QAB1(D),XR(g)
      • S(h);N_GUARD,XP(C)::QAR2(D),XR(g)
      • R(a);SBLOCK::B(G)+S(E)
      • R(g);::B(G)+S(E)
      • R(g);::B(G)+S(E),XR(g)
      • S(h);N_SPINR(g)::B(G)+S(E),XS(h)
      • S(h);::B(G)+S(E),XS(h)
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