MESON Chess Problem Database

Problem Display
PID: 19298 (4R3/2KQ1nNq/b1B4n/1pp2r2/r4k2/4N2P/3P4/6R1 w - - 0 1)

Segers, Marcel

La Settimana Enigmistica, 1935

4R3/2KQ1nNq/b1B4n/1pp2r2/r4k2/4N2P/3P4/6R1

#2

9 + 9

3098 FIDE Album (1914-1944) (I) 1971
45 Schach 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.Sxh5#
    • 1...Rf6
      • 2.Sh5#
    • 1...Sg4
      • 2.Rxg4#
    • 1...Sg8
      • 2.Rg4#
    • 1...Se5
      • 2.Se6#
    • 1...Sg5
      • 2.Sh5#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Qxf5+?
      • 1...Sxf5
        • 2.Rg4#
      • 1...Qxf5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qf1#
      • 1...Sg4
        • 2.Rxg4#
      • 1...Ra1
        • 2.Qe4#
      • 1...Se5
        • 2.Sd5#
      • 1...Sg5
        • 2.Sg2#
      • 1...b4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD::S(H),XR(e)
    • R(e);N_GUARD::S(H)
    • S(g);N_GUARD::R1(A),XS(g)
    • S(g);N_GUARD::R1(A)
    • S(h);SBLOCK::S(H)
    • S(h);S_CUTR(e)::S(H)
    • P(d);N_GUARD,S_CUTR(a)::QAR2(G)
  • Tries
    • Try
      • Q(G);CHECK,XR(e)
      • Vars
        • S(g);XQ(G)::R1(A)
      • Refutation
        • Q(i);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR(G)
    • Vars
      • S(g);N_GUARD::R1(A),XS(g)
      • R(a);N_GUARD::QAR1(G)
      • S(h);P_PINS(H),S_CUTR(e)::S(C)
      • S(h);P_PINS(H),SBLOCK::S(C)
      • P(c);S_CUTR(a)::QAR1(G)
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Developed and maintained by Brian Stephenson.
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