MESON Chess Problem Database

Problem Display
PID: 82405 (b1n5/1Br5/2p5/1pN2R2/p1kP2rR/3Np3/2K3p1/B7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2004

b1n5/1Br5/2p5/1pN2R2/p1kP2rR/3Np3/2K3p1/B7

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Rxd4#
    • 1...b4
      • 2.Ba6#
  • Tries
    • 1.Sb2+?
      • 1...Kxd4
        • 2.Rxg4#
      • 1...Kb4!
    • 1.Sb3?
      • threat
        • 2.Sa5#
        • 2.Rc5#
      • 1...Rg5
        • 2.Sa5#
      • 1...c5
        • 2.Sa5#
      • 1...axb3+!
    • 1.Sxa4?
      • threat
        • 2.Rc5#
      • 1...Rg5
        • 2.Sab2#
      • 1...c5!
    • 1.Sd7?
      • threat
        • 2.Rc5#
      • 1...c5
        • 2.S7e5#
      • 1...Rg5!
    • 1.Bc3?
      • threat
        • 2.Sb2#
      • 1...b4
        • 2.Ba6#
      • 1...a3!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Rc5#
      • 1...c5
        • 2.Se5#
      • 1...Rg5
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(e);OGATE,P_SPINR(e),XP(D)::R1(E),XR(e)
    • P(f);OGATEB::B(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINR(e),XP(D)::R(E),XR(e)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::S(F)
        • P(g);::S(F)
      • Refutation
        • P(c);CHECK,XS(F)
    • Try
      • S(F);XP(c)
      • Threat
        • R1(G)
      • Vars
        • R(e);::S(F)
      • Refutation
        • P(g);
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • P(g);::S(F)
      • Refutation
        • R(e);
    • Try
      • B(A);
      • Threat
        • S(C)
      • Vars
        • P(f);OGATEB::B(H)
      • Refutation
        • P(c);
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • P(g);::S(C)
      • R(e);::S(C)
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