MESON Chess Problem Database

Problem Display
PID: 265957 (q3rb2/6nK/5NR1/1Q1r1k2/5N2/8/B6B/8 w - - 0 1)

Eland, R

Schakend Nederland, 1986

q3rb2/6nK/5NR1/1Q1r1k2/5N2/8/B6B/8

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3+?
      • 1...Ke5
        • 2.Sg4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rxd3!
    • 1.Qxd5+?
      • 1...Re5
        • 2.Bb1#
      • 1...Qxd5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sd4#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Rxe6
        • 2.Qf1#
      • 1...Sxe6
        • 2.Bb1#
      • 1...Qa4
        • 2.Qxd5#
      • 1...Qa7
        • 2.Qxd5#
      • 1...Bc5
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,N_PINR(a)
      • Vars
        • K(b);P-FLIGHT,S_CUTR(a),S_CUTR(e)::S(E)
        • R(e);N_GUARD,P_SPINR(e)::QAB1(D),XR(e)
      • Refutation
        • R(a);XQ(D)
    • Try
      • Q(D);CHECK,XR(a)
      • Vars
        • R(e);P_SPINR(e)::B(A)
      • Refutation
        • Q(d);XQ(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
      • R(e);SBLOCK,XS(C)::QAR(D)
      • S(c);SBLOCK,XS(C)::B(A)
      • Q(d);N_GUARD::QAR2(D),XR(a)
      • B(f);N_GUARD,N_SPINR(a)::S(C),XS(c)
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