MESON Chess Problem Database

Problem Display
PID: 141337 (1b6/2p3K1/1n2k3/3RnN2/1N4p1/8/2Q5/8 w - - 0 1)

Anonymous

Brisbane Courier, 1915

1b6/2p3K1/1n2k3/3RnN2/1N4p1/8/2Q5/8

#2

5 + 6

5454 Near Snap 2011
14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qc6#
    • 1...Sf3
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sg6
      • 2.Qc6#
    • 1...Sed7
      • 2.Qc6#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf4#
      • 1...Kxd5
        • 2.Sf4#
      • 1...Kxf5
        • 2.Rxe5#
      • 1...Sxd3
        • 2.Qc6#
      • 1...Sxd5
        • 2.Sc5#
      • 1...Sg6
        • 2.Qc6#

Anticipated by 4919(1893), 23671(1901)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAR2(A)
    • S(b);N_GUARD::QAR2(A),XS(b)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(d);S_FLIGHT,XR(C)::S(B)
      • K(d);P_SPINS(b),S_FLIGHT,XS(D)::R1(C),XS(b)
      • S(b);N_GUARD,XS(B)::QAR2(A)
      • S(c);SBLOCK,XR(C)::S(B)
      • S(b);N_GUARD::QAR2(A)
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