MESON Chess Problem Database

Problem Display
PID: 82331 (K3N3/Q5BP/2p1k3/2p3bR/2ppBpr1/4r3/4N3/4R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemas, 1990

K3N3/Q5BP/2p1k3/2p3bR/2ppBpr1/4r3/4N3/4R3

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Re5#
    • 1...Bh6
      • 2.Re5#
    • 1...Bd8
      • 2.Re5#
  • Tries
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Bg6?
      • threat
        • 2.Qf7#
      • 1...Kd5
        • 2.Qd7#
      • 1...Ra3
        • 2.Sc3#
        • 2.Sxf4#
      • 1...Be7!
    • 1.Rxg5?
      • threat
        • 2.Re5#
      • 1...Rxg5
        • 2.Sxf4#
      • 1...Rxe4!
    • 1.h8S?
      • threat
        • 2.Qf7#
      • 1...Be7
        • 2.Re5#
      • 1...Ra3!
  • Keys
    • 1.Bxc6!
      • threat
        • 2.Qd7#
      • 1...Kf5
        • 2.Qf7#
      • 1...Ra3
        • 2.Sxd4#
      • 1...Be7
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(g);OGATE::R1(D)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(i);S_FLIGHT::QAR2(E)
      • Refutation
        • K(i);P_SPINB(g),S_FLIGHT,XB(C)
    • Try
      • B(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(i);P_SPINB(g),S_FLIGHT::QAR2(E)
      • Refutation
        • B(g);
    • Try
      • R(D);XB(g)
      • Threat
        • R1(D)
      • Vars
        • R(e);N_GUARD,XR(D)::S(B),XP(d)
      • Refutation
        • R(a);XB(C)
    • Try
      • P(G);
      • Threat
        • QAB1(E)
      • Vars
        • B(g);OGATE::R1(D)
      • Refutation
        • R(a);P_PINQ(E)
  • Actual
    • B(C);XP(h)
    • Threat
      • QAB1(E)
    • Vars
      • K(i);P_SPINB(g),S_FLIGHT::QAR2(E)
      • R(a);P_PINQ(E)::R(A)+S(B),DCHECK,XP(c)
      • B(g);::B(C)
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