MESON Chess Problem Database

Problem Display
PID: 82077 (3q3r/b2p4/3R1pb1/2r1pk1p/2P2B1K/3P1NP1/2B5/5R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Themes-64, 1959

3q3r/b2p4/3R1pb1/2r1pk1p/2P2B1K/3P1NP1/2B5/5R2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...exf4
      • 2.d4#
    • 1...e4
      • 2.Sd4#
      • 2.dxe4#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Sh4#
      • 1...exf4
        • 2.d4#
      • 1...h4!
    • 1.Sxe5?
      • threat
        • 2.d4#
      • 1...fxe5+
        • 2.Bg5#
      • 1...Rxc4
        • 2.dxc4#
      • 1...Rxe5
        • 2.Be3#
      • 1...Qa8!
  • Keys
    • 1.Bxe5!
      • threat
        • 2.d4#
      • 1...Rxc4+
        • 2.dxc4#
      • 1...fxe5+
        • 2.Sg5#
      • 1...Rxe5
        • 2.Sd4#
      • 1...Qa8
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD,XB(G)::B(B)+P(C)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • S(D)
      • Vars
        • P(b);N_GUARD,XB(G)::B(B)+P(C)
      • Refutation
        • P(d);
    • Try
      • S(D);XP(b)
      • Threat
        • B(B)+P(C)
      • Vars
        • P(e);CHECK,SBLOCK,XS(D)::R(A)+B(G)
        • R(a);OGATE,P_PINB(G),XP(F)::B(B)+P(C),XR(a)
        • R(a);SBLOCK,XS(D)::R(A)+B(G)
      • Refutation
        • Q(i);
  • Actual
    • B(G);XP(b)
    • Threat
      • B(B)+P(C)
    • Vars
      • R(a);CHECK,OGATE,XP(F)::B(B)+P(C),XR(a)
      • P(e);CHECK,SBLOCK,XB(G)::R(A)+S(D)
      • R(a);SBLOCK,XB(G)::R(A)+S(D),DCHECK
      • Q(i);N_GUARD::R1(I),XP(e)
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