MESON Chess Problem Database

Problem Display
PID: 2344 (3n1q2/5B2/Q4p1r/3Prk1p/3pNP1P/5KP1/1p6/8 w - - 0 1)

Gardner, John Carey

Source?, 0000

3n1q2/5B2/Q4p1r/3Prk1p/3pNP1P/5KP1/1p6/8

#2

8 + 9

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qg7
      • 2.Sd6#
    • 1...Qe8
      • 2.Sd6#
    • 1...Qg8
      • 2.Sd6#
    • 1...Qh8
      • 2.Sd6#
    • 1...Re7
      • 2.Sd6#
    • 1...Rh7
      • 2.Qxf6#
    • 1...Rh8
      • 2.Qxf6#
  • Keys
    • 1.Qd3!
      • threat
        • 2.Sd6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Qd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD::S(C),XQ(i)
    • Q(i);N_GUARD::S(C)
    • R(c);S_CUTQ(i)::S(C)
    • R(g);N_GUARD::QAR1(G),XP(f)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+S(C),DCHECK
    • Vars
      • R(c);OGATE,P_SPINR(c),XS(C)::QAB1(G),XR(c)
      • Q(i);::QAB(G)+S(C),DCHECK,XQ(i)
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