MESON Chess Problem Database

Problem Display
PID: 20969 (8/B2p3Q/3pq3/1P1k4/2r3P1/2PN4/4p1N1/4K3 w - - 0 1)

Rice, William Bayard

Pittsburgh Leader, 1914

8/B2p3Q/3pq3/1P1k4/2r3P1/2PN4/4p1N1/4K3

#2

8 + 6

14689 A Memorial to D. J. Densmore 1920
3360 Simple Two-move Themes 1924
5501 Chess Cameos 1936
145 StrateGems 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qg8
      • 2.Qf5#
    • 1...Qh6
      • 2.Qf5#
  • Tries
    • 1.Qf5+?
      • 1...Qe5
        • 2.Se3#
      • 1...Qxf5!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Se3#
        • 2.Sgf4#
      • 1...Ke4
        • 2.Sgf4#
      • 1...Qxg4
        • 2.Sgf4#
      • 1...Rxc3
        • 2.Se3#
      • 1...Rxg4
        • 2.Se3#
      • 1...Qf5
        • 2.Sgf4#
      • 1...Qf7
        • 2.Sgf4#
      • 1...Qg8
        • 2.Sgf4#
      • 1...Qe3
        • 2.Sgf4#
      • 1...Qe5
        • 2.Sgf4#
      • 1...Qf6
        • 2.Sgf4#
      • 1...Qg6
        • 2.Sgf4#
      • 1...Qh6
        • 2.Sgf4#
      • 1...Qe7
        • 2.Sgf4#
      • 1...Qe8
        • 2.Sgf4#
      • 1...Ra4
        • 2.Se3#
      • 1...Rb4
        • 2.Se3#
      • 1...Rd4
        • 2.Se3#
      • 1...Rf4
        • 2.Se3#
      • 1...Rc5
        • 2.Se3#
      • 1...Rc6
        • 2.Se3#
      • 1...Rc7
        • 2.Se3#
      • 1...Rc8
        • 2.Se3#
      • 1...Qe4
        • 2.Sgf4#
      • 1...Re4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD::QAR2(H),XQ(e)
    • Q(e);N_GUARD::QAR2(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • Q(e);P_SPINQ(e)::S(B)
      • Refutation
        • Q(e);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT::QAB(H)+S(B)
      • Q(e);XP(E)::QAB(H)+S(B),DCHECK
      • R(b);XP(C)::QAB(H)+S(B),DCHECK
      • R(b);XP(E)::QAB(H)+S(B),DCHECK
      • Q(e);::QAB(H)+S(B),DCHECK
      • R(b);::QAB(H)+S(B),DCHECK
      • Q(e);::S(B)
      • R(b);::S(B)
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