MESON Chess Problem Database

Problem Display
PID: 81444 (1qR5/3R4/2bp1N2/B2p1Qp1/Nb1k1PK1/3p4/BP3P1p/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Sakkelet, 1985

1qR5/3R4/2bp1N2/B2p1Qp1/Nb1k1PK1/3p4/BP3P1p/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Bc3#
    • 1...Bc3
      • 2.Bxc3#
      • 2.bxc3#
    • 1...Bc5
      • 2.Bc3#
    • 1...Bxa4
      • 2.Qxd5#
    • 1...Bb5
      • 2.Qxd5#
    • 1...gxf4
      • 2.Qxf4#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qxd3#
      • 1...Kxc4
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe5#
      • 1...gxf4
        • 2.Qxf4#
      • 1...d2
        • 2.Qd3#
      • 1...Bxd7!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Qxd5#
      • 1...Bxc5
        • 2.Bc3#
      • 1...Bxd7
        • 2.Sb3#
      • 1...dxc5
        • 2.Qe4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(c);OGATE::B(G)
    • B(g);N_GUARD,XS(D)::QAR1(H),XP(e)
    • B(g);N_GUARD::QAR1(H),XP(e)
    • P(f);OGATE,XP(E)::QAR2(H),XP(f)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(H),XP(b)
      • Vars
        • K(d);P-FLIGHT,P_SPINB(g),XB(A)::QAB1(H),XP(e)
        • P(e);P_SPINP(h),SBLOCK,XB(A)::QAB1(H)
        • P(f);OGATE,XP(E)::QAR2(H),XP(f)
        • P(b);::QAR1(H)
      • Refutation
        • B(g);P_PINQ(H),XR(J)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);P_SPINB(g),P_SPINP(e),S_FLIGHT,XS(D)::QAR1(H),XP(e)
      • B(c);OGATE,SBLOCK,XS(D)::B(G)
      • B(g);P_PINQ(H),XR(J)::S(D)
      • P(h);P_SPINP(e),SBLOCK,XS(D)::QAR1(H)
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