MESON Chess Problem Database

Problem Display
PID: 272891 (Q5N1/b1pr4/2nk1B2/2NP4/bP5p/5n2/3R1K2/2R4B w - - 0 1)

Ekstrom, Sven Johan Adrian

3rd Prize, Schackvarlden, 1940

Q5N1/b1pr4/2nk1B2/2NP4/bP5p/5n2/3R1K2/2R4B

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxc6#
    • 1...Bc2
      • 2.Qxc6#
    • 1...Bb3
      • 2.Qxc6#
    • 1...Bxc5+
      • 2.bxc5#
    • 1...Bb8
      • 2.Se4#
      • 2.Sb7#
    • 1...Sg1
      • 2.dxc6#
    • 1...Sh2
      • 2.dxc6#
    • 1...Sfd4
      • 2.Sb7#
    • 1...Sg5
      • 2.dxc6#
    • 1...Scd4
      • 2.Se4#
  • Tries
    • 1.dxc6+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxd2!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Sf5#
      • 1...Bxc5+
        • 2.bxc5#
      • 1...Bc2
        • 2.Qxc6#
      • 1...Sfd4
        • 2.Sb7#
      • 1...Scd4
        • 2.Se4#
      • 1...Se7
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::QAR1(I),XS(d)
    • B(f);CHECK,OGATE,XS(F)::P(E),XB(f)
    • S(a);N_GUARD::R(C)+P(G),XS(d)
    • S(a);N_PINS(F)::S(F)
    • S(d);N_PINS(F)::S(F)
  • Tries
    • Try
      • P(G);CHECK,XS(d)
      • Vars
        • S(a);N_GUARD,N_PINS(F),P_SPINS(a)::R(C),XS(a)
      • Refutation
        • S(a);XR(C)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • B(f);CHECK,OGATE,XS(F)::P(E),XB(f)
      • B(b);N_GUARD::QAR1(I),XS(d)
      • S(a);N_PINS(F)::S(F)
      • S(d);N_PINS(F)::S(F)
      • S(d);S_CUTR(h)::S(J)
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