MESON Chess Problem Database

Problem Display
PID: 102804 (4r3/B3R3/2Nn2Np/2p1pp2/4k2K/1Q4n1/4b1p1/4R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

2nd HM., Die Schwalbe, 2008

4r3/B3R3/2Nn2Np/2p1pp2/4k2K/1Q4n1/4b1p1/4R3

#2

7 + 10

23 Die Schwalbe 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Rxe5#
    • 1...Rb8
      • 2.Rxe5#
    • 1...Rc8
      • 2.Rxe5#
    • 1...Rd8
      • 2.Rxe5#
    • 1...Rf8
      • 2.Rxe5#
    • 1...Rg8
      • 2.Rxe5#
    • 1...Rh8
      • 2.Rxe5#
    • 1...Sh1
      • 2.Rxe2#
    • 1...Sh5
      • 2.Rxe2#
  • Tries
    • 1.Sgxe5?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Sg6#
      • 1...f4
        • 2.Qd3#
      • 1...g1S!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Bxc5#
      • 1...Kxd5!
  • Keys
    • 1.Scxe5!
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Sc6#
      • 1...c4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(j);N_GUARD::R1(G),XP(f)
    • S(c);N_GUARD::R(A),XB(a)
  • Tries
    • Try
      • S(E);XP(f)
      • Threat
        • QAB1(B)
      • Vars
        • K(d);N_SPINB(a),P-FLIGHT::S(E)
        • P(g);SBLOCK::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);N_SPINP(f),P-FLIGHT,P_SPINP(e)::B(F),XP(e)
      • Refutation
        • K(d);N_SPINB(a),N_SPINP(f),S_FLIGHT,XQ(B)
  • Actual
    • S(D);XP(f)
    • Threat
      • QAB1(B)
    • Vars
      • K(d);N_SPINB(a),P-FLIGHT,P_SPINP(e)::S(D)
      • P(e);::QAB1(B)
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