MESON Chess Problem Database

Problem Display
PID: 248232 (8/1brn4/Rpk1pN2/1p6/3Q3K/brp1Np2/qnp1RB2/5B2 w - - 0 1)

Blikeng, Bjarne

5th HM.=, Polski Zwiazek Problemistow, 1947

8/1brn4/Rpk1pN2/1p6/3Q3K/brp1Np2/qnp1RB2/5B2

#2

8 + 14

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Rxb6#
      • 2.Qxb6#
    • 1...Sxf6
      • 2.Rxb6#
    • 1...Sb8
      • 2.Rxb6#
      • 2.Qxb6#
    • 1...Sf8
      • 2.Rxb6#
      • 2.Qxb6#
    • 1...fxe2
      • 2.Bg2#
    • 1...e5
      • 2.Qd5#
  • Tries
    • 1.Qe4+?
      • 1...Kc5
        • 2.Sf5#
      • 1...Kd6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qe4#
      • 1...Sxf6
        • 2.Rxb6#
      • 1...exf5
        • 2.Qd5#
      • 1...Rc8
        • 2.Qxd7#
      • 1...b4
        • 2.Rxe6#
      • 1...Rb4
        • 2.Se7#
      • 1...Sc5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(n);N_GUARD,XS(H)::R1(G),XP(i)
    • P(g);OGATEB,XR(B)::B(A)
    • P(k);N_GUARD::QAB1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(j);N_SPINP(i),P-FLIGHT::B(C)+S(D)
      • Refutation
        • K(j);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • QAB(E)
    • Vars
      • S(n);N_GUARD,XS(H)::R1(G),XP(i)
      • P(k);N_GUARD,XS(D)::QAB1(E)
      • R(m);N_GUARD::QAB1(E),XS(n)
      • P(h);S_CUTB(d)::R(B),XP(k)
      • R(e);P_PINQ(E),S_CUTB(d)::S(D)
      • S(n);S_CUTB(d)::QAR1(E)
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