MESON Chess Problem Database

Problem Display
PID: 163780 (8/1N1b4/4R1P1/1p1kp3/2Rpn3/7B/1Kn5/5Q2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Variantim, 1989

8/1N1b4/4R1P1/1p1kp3/2Rpn3/7B/1Kn5/5Q2

#2

7 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Bg2?
      • threat
        • 2.Rd6#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Bxe6
        • 2.Rc5#
      • 1...d3!
    • 1.Qg2?
      • threat
        • 2.Rc5#
      • 1...bxc4
        • 2.Rd6#
      • 1...d3
        • 2.Qxe4#
      • 1...Kxc4!
    • 1.Qh1?
      • threat
        • 2.Rc5#
      • 1...bxc4
        • 2.Rd6#
      • 1...d3
        • 2.Qxe4#
      • 1...Kxc4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rc5#
      • 1...Kxc4
        • 2.Qb3#
      • 1...bxc4
        • 2.Rd6#
      • 1...d3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);P_PINS(c)
      • Threat
        • R1(E)
      • Vars
        • K(e);N_SPINS(c),OGATEB,S_FLIGHT,XR(E)::QAB1(A)
        • B(g);SBLOCK,XR(E)::R1(D)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • R1(D)
      • Vars
        • P(d);SBLOCK,XR(D)::R1(E)
        • P(b);::QAB1(A),XS(c)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT,XR(D)
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • R1(D)
      • Vars
        • P(d);SBLOCK,XR(D)::R1(E)
        • P(b);::QAB1(A),XS(c)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT,XR(D)
  • Actual
    • Q(A);P_PINS(c)
    • Threat
      • R1(D)
    • Vars
      • K(e);N_SPINS(c),OGATEB,S_FLIGHT,XR(D)::QAB1(A)
      • P(d);SBLOCK,XR(D)::R1(E)
      • P(b);::QAB1(A),XS(c)
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