MESON Chess Problem Database

Problem Display
PID: 162612 (2rb4/1R6/r3k2N/2pnp3/p1Q1N2B/8/8/K7 w - - 0 1)

Horstmann, Bernd

Die Schwalbe, 1969

2rb4/1R6/r3k2N/2pnp3/p1Q1N2B/8/8/K7

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Re7#
    • 1...Bb6
      • 2.Re7#
    • 1...Be7
      • 2.Rxe7#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Qxd5#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Kxd7!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qh3#
      • 1...Sc3
        • 2.Qd7#
      • 1...Se3
        • 2.Qd7#
      • 1...Sb4
        • 2.Qd7#
      • 1...Sf4
        • 2.Qd7#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sf6
        • 2.Sg5#
      • 1...Sc7
        • 2.Sxc5#
      • 1...Se7
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(h);N_GUARD::R1(F)
    • B(h);N_GUARD::R1(F),XB(h)
  • Tries
    • Try
      • R(F);
      • Threat
        • QAB1(B),XS(c)
      • Vars
        • R(e);N_GUARD::R1(F),XR(e)
      • Refutation
        • K(f);N_SPINS(c),S_FLIGHT,XR(F)
  • Actual
    • Q(B);N_PINS(c)
    • Threat
      • QAB(B)
    • Vars
      • S(c);OGATE::QAB1(B)
      • S(c);OGATE::QAR1(B)
      • S(c);SBLOCK,S_CUTB(h)::S(C)
      • S(c);S_CUTR(g)::S(C),XP(b)
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