MESON Chess Problem Database

Problem Display
PID: 137215 (4r2q/n2Nr1QP/3N1bBB/3p3R/1P1k4/3P1pR1/1P2b2K/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Mat Plus, 1995

4r2q/n2Nr1QP/3N1bBB/3p3R/1P1k4/3P1pR1/1P2b2K/8

#2

12 + 9

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rh4#
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sc6
      • 2.Sb5#
    • 1...Sc8
      • 2.Sb5#
    • 1...f2
      • 2.Sf5#
  • Tries
    • 1.Sxf6?
      • threat
        • 2.Rxd5#
      • 1...Re5
        • 2.Qxa7#
      • 1...Qg8!
    • 1.Qxf6+?
      • 1...Re5
        • 2.Rg4#
        • 2.Rh4#
      • 1...Qxf6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Rg4#
      • 1...Rxe5
        • 2.Qxa7#
      • 1...Bxd3
        • 2.Sxf3#
      • 1...Bxe5
        • 2.Rh4#
      • 1...Bg5
        • 2.Sf5#
      • 1...f2
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(e);P_PINR(D),S_CUTR(g)::R(F)
    • S(f);N_GUARD::S(G),XS(f)
    • S(f);N_GUARD::S(G)
    • P(b);::S(G)
  • Tries
    • Try
      • S(J);XB(e)
      • Threat
        • R1(F),XP(d)
      • Vars
        • R(g);OGATE::QAB(K),XS(f)
      • Refutation
        • Q(i);
    • Try
      • Q(K);CHECK,XB(e)
      • Refutation
        • Q(i);XQ(K)
  • Actual
    • S(J);N_PINB(e)
    • Threat
      • R(D)
    • Vars
      • R(g);OGATE,XS(J)::QAB(K),XS(f)
      • B(a);N_GUARD,XP(C)::S(J),XP(b)
      • B(e);N_GUARD,P_PINR(D),P_SPINB(e),XS(J)::R(F)
      • B(e);::S(G)
      • P(b);::B(I)
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