MESON Chess Problem Database

Problem Display
PID: 11544 (8/5K2/8/3P1Q2/2p1p3/1p1k4/1B1nq1N1/Nrb2B2 w - - 0 1)

Ebben, Jacobus Johannes

1st Prize, De Maasbode, 1939

8/5K2/8/3P1Q2/2p1p3/1p1k4/1B1nq1N1/Nrb2B2

#2

7 + 8

887 Mate in Two Moves 1941
461 Schach-Express 1950
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Tries
    • 1.Qh3+?
      • 1...e3
        • 2.Qxe3#
      • 1...Sf3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Se1#
        • 2.Sf4#
        • 2.Bxe2#
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qxe2#
      • 1...Qxf1
        • 2.Sf4#
      • 1...Rxa1
        • 2.Se1#
      • 1...Rxb2
        • 2.Qe3#
      • 1...Bxb2
        • 2.Qe3#
      • 1...Sxf1
        • 2.Qd4#
      • 1...Sf3
        • 2.Qxe2#
      • 1...c3
        • 2.Bxe2#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(h)
      • Vars
        • P(h);P_SPINP(h)::QAR1(F),XP(h)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(F);N_PINP(h)
    • Threat
      • DUALS(6)
    • Vars
      • Q(d);N_SPINQ(d),P_PINQ(F),XB(B)::S(D)
      • R(a);XS(A)::S(D)
      • R(a);XB(C)::QAR1(F)
      • B(b);XB(C)::QAR1(F)
      • S(c);N_SPINQ(d),XB(B)::QAR1(F)
      • S(c);::QAB1(F),XQ(d)
      • P(g);::B(B),XQ(d)
      • P(h);::QAR1(F),XP(h)
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Developed and maintained by Brian Stephenson.
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