MESON Chess Problem Database

Problem Display
PID: 162550 (6n1/7b/1n6/4kPB1/Q2R4/2N5/5b2/5K2 w - - 0 1)

Allehand, Julius

Wiener Hausfrauen-Zeitung, 1889

6n1/7b/1n6/4kPB1/Q2R4/2N5/5b2/5K2

#2

6 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa4
      • 2.Rd5#
    • 1...Sc4
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sd7
      • 2.Rd5#
    • 1...Sa8
      • 2.Rd5#
    • 1...Sc8
      • 2.Rd5#
  • Tries
    • 1.Qb5+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kxd4!
    • 1.Qa5+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kxd4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Re4#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Bxf5
        • 2.Qd6#
      • 1...Sxd7
        • 2.Rd5#
      • 1...Sf6
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD,XQ(C)::R1(D)
    • S(c);N_GUARD::R1(D)
    • S(c);N_GUARD::R1(D),XS(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(D)
  • Actual
    • Q(C);
    • Threat
      • R1(D)
    • Vars
      • B(a);SBLOCK,XR(D)::QAR1(C)
      • B(d);SBLOCK,XP(E)::QAB1(C)
      • S(c);N_GUARD,XQ(C)::R1(D)
      • S(e);SBLOCK::B(F)
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