MESON Chess Problem Database

Problem Display
PID: 74615 (8/8/8/2B5/8/1np4K/N2kpR2/1Q3n2 w - - 0 1)

Jacob, Bernhard

Schafer, Hans-Jurgen

Saarbrucker Zeitung, 1993

8/8/8/2B5/8/1np4K/N2kpR2/1Q3n2

#2

5 + 5

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2+?
      • 1...Ke1
        • 2.Rxe2#
        • 2.Qxe2#
      • 1...Kxc2!
    • 1.Qd3+?
      • 1...Ke1
        • 2.Rxe2#
        • 2.Qxe2#
      • 1...Kxd3!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rd3#
      • 1...Sxc5
        • 2.Qc1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...e1Q
        • 2.Qd3#
      • 1...e1S
        • 2.Rf2#
      • 1...e1B
        • 2.Qd3#
      • 1...e1R
        • 2.Qd3#
      • 1...Se3
        • 2.Bxe3#
      • 1...c2
        • 2.Bb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XQ(A)
  • Actual
    • R(C);N_PINP(c)
    • Threat
      • R1(C)
    • Vars
      • S(d);N_GUARD,XB(E)::QAB1(A)
      • S(d);N_GUARD::QAB1(A),XS(d)
      • P(c);SBLOCK::QAR1(A)
      • P(c);OGATEB::R(C)
      • S(a);N_GUARD::B(E),XS(a)
      • P(e);OGATEB::B(E)
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