MESON Chess Problem Database

Problem Display
PID: 8152 (4Q3/pp2q1n1/2bB1p2/R4r2/P1k2NBR/8/K1P1N3/8 w - - 0 1)

Haring, Jacobus

Larsen, Lars Aksglade (= Aksglade, Lars)

The Problemist, 1995

4Q3/pp2q1n1/2bB1p2/R4r2/P1k2NBR/8/K1P1N3/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa4
      • 2.Rxa4#
      • 2.Qxa4#
    • 1...Bd5
      • 2.Qb5#
  • Tries
    • 1.Qxc6+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...bxc6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rc5#
      • 1...Qxd6
        • 2.Qe4#
      • 1...Qxe2
        • 2.Bxe2#
      • 1...Rxd5
        • 2.Be6#
      • 1...Bxd5
        • 2.Qb5#
      • 1...Bb5
        • 2.Qxb5#
      • 1...b5
        • 2.Qxc6#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Se6
        • 2.Se3#
      • 1...b6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE::QAB1(J)
  • Tries
    • Try
      • Q(J);CHECK,XB(c)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(J),XR(b)
      • Refutation
        • P(f);XQ(J)
  • Actual
    • S(E);
    • Threat
      • R1(H)
    • Vars
      • Q(g);OGATE,XB(I)::QAR2(J)
      • Q(g);OGATE,P_PINP(B),XS(C)::R(G)+B(F),DCHECK,XQ(g)
      • R(b);OGATE,XS(E)::R(G)+B(F)
      • B(c);OGATE,XS(E)::QAB1(J)
      • B(c);OGATE::QAB1(J),XB(c)
      • P(f);N_GUARD::QAR2(J),XB(c)
      • Q(g);N_GUARD::S(E),XQ(g)
      • S(h);S_CUTQ(g)::S(E)
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