MESON Chess Problem Database

Problem Display
PID: 237260 (1B6/4p2R/1N2k1p1/1pr1P3/2r1N1K1/4b3/B1n1Q1n1/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2012

1B6/4p2R/1N2k1p1/1pr1P3/2r1N1K1/4b3/B1n1Q1n1/8

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sg5#
    • 1...Bf4
      • 2.Sxc5#
    • 1...Sd4
      • 2.Sxc5#
    • 1...Sf4
      • 2.Sg5#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qd7#
      • 1...Rc7
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sg5#
      • 1...Sd4
        • 2.Sxc5#
      • 1...Bd2!
    • 1.Qf3?
      • threat
        • 2.Qf7#
      • 1...Bf4
        • 2.Sxc5#
      • 1...Sf4
        • 2.Sg5#
      • 1...Rc7!
    • 1.Qd2?
      • threat
        • 2.Qd7#
      • 1...Rc7
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sg5#
      • 1...Sd4
        • 2.Sxc5#
      • 1...Bxd2!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd7#
      • 1...Rc7
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sg5#
      • 1...Sd4
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);N_PINS(C)::S(C)
    • B(c);N_PINS(C)::S(C),XR(f)
    • S(a);N_PINS(C)::S(C),XR(f)
    • S(b);N_PINS(C)::S(C)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(f);N_GUARD::QAB1(B)
        • R(f);N_GUARD,N_SPINR(d)::QAB1(B),XR(f)
        • B(c);N_PINS(C)::S(C)
        • S(a);N_PINS(C)::S(C),XR(f)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(c);N_PINS(C)::S(C),XR(f)
        • S(b);N_PINS(C)::S(C)
      • Refutation
        • R(f);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(f);N_GUARD::QAB1(B)
        • R(f);N_GUARD,N_SPINR(d)::QAB1(B),XR(f)
        • B(c);N_PINS(C)::S(C)
        • S(a);N_PINS(C)::S(C),XR(f)
      • Refutation
        • B(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(f);N_GUARD::QAB1(B)
      • R(f);N_GUARD,N_SPINR(d)::QAB1(B),XR(f)
      • B(c);N_PINS(C)::S(C)
      • S(a);N_PINS(C)::S(C),XR(f)
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