MESON Chess Problem Database

Problem Display
PID: 223650 (1K2R3/Bp5B/1r1N4/2Q1P1n1/3b1p1N/nr2kP2/3p3R/4q3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Suomen Shakki, 2004

1K2R3/Bp5B/1r1N4/2Q1P1n1/3b1p1N/nr2kP2/3p3R/4q3

#2

10 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sdf5#
    • 1...Rb5
      • 2.Qxd4#
    • 1...Ra6
      • 2.Qxd4#
    • 1...Rc6
      • 2.Qxd4#
    • 1...Sb1
      • 2.Sc4#
    • 1...Sc2
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sb5
      • 2.Sc4#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sdf5#
      • 1...Qxh4
        • 2.Qe2#
      • 1...Rxd6
        • 2.Qxb3#
      • 1...Bxe5
        • 2.Qc5#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...Sxf3
        • 2.Shf5#
      • 1...Qb1
        • 2.Re2#
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(d);SBLOCK::S(F)
    • R(i);::QAB1(D),XB(f)
    • S(c);N_GUARD::S(F)
    • S(c);N_GUARD::S(F),XS(c)
  • Actual
    • Q(D);N_PINB(f)
    • Threat
      • S(F)
    • Vars
      • Q(a);N_GUARD,XS(C)::QAR1(D)
      • R(i);N_GUARD,P_SPINB(f),XS(F)::QAR(D),XR(d)
      • B(f);OGATEB,P_PINS(F),P_SPINB(f),P_SPINR(i),XP(E)::QAB(D)
      • S(c);XQ(D)::S(F),XS(c)
      • S(h);SBLOCK,XP(B)::S(C)
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