MESON Chess Problem Database

Problem Display
PID: 199521 (6n1/2bQp3/6K1/3pk1p1/3p1p2/3r1r2/3NP3/4N3 w - - 0 1)

Groeneveld, Cornelis

Rhein-Main Presse, 2001

(First published on Sat Jun 23 2001)

6n1/2bQp3/6K1/3pk1p1/3p1p2/3r1r2/3NP3/4N3

#2

5 + 10

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sxd3#
    • 1...Rf2
      • 2.Sxd3#
    • 1...Bd6
      • 2.Qf5#
    • 1...Sf6
      • 2.Qxe7#
    • 1...Sh6
      • 2.Qxe7#
    • 1...e6
      • 2.Qxc7#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qe6#
      • 1...e6
        • 2.Qxe6#
      • 1...Sh6+!
    • 1.Sc4+?
      • 1...Ke4
        • 2.Qf5#
      • 1...dxc4!
  • Keys
    • 1.e4!
      • threat
        • 2.Qxd5#
      • 1...dxe4
        • 2.Sc4#
      • 1...dxe4 ep
        • 2.Sexf3#
      • 1...fxe4 ep
        • 2.Sxd3#
      • 1...Bd6
        • 2.Qf5#
      • 1...Sf6
        • 2.Qxe7#
      • 1...e6
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::S(A),XR(a)
    • B(h);SBLOCK::QAR1(E)
    • S(j);N_GUARD::QAR2(E),XP(i)
    • P(i);SBLOCK::QAB(E),XB(h)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR1(E)
      • Vars
        • P(i);::QAR1(E),XP(i)
      • Refutation
        • S(j);CHECK
    • Try
      • S(B);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(E)
      • Refutation
        • P(e);XS(B)
  • Actual
    • P(C);
    • Threat
      • QAR1(E),XP(e)
    • Vars
      • P(e);N_GUARD,SBLOCK,XP(C)::S(B)
      • P(c);EP,S_CUTR(a),XP(C)::S(A),XR(b)
      • P(d);EP,S_CUTR(b),XP(C)::S(A),XR(a)
      • B(h);SBLOCK::QAR1(E)
      • S(j);N_GUARD::QAR2(E),XP(i)
      • P(i);SBLOCK::QAB(E),XB(h)
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