MESON Chess Problem Database

Problem Display
PID: 155836 (1B1n1r2/2R2R1B/2PQ1b1r/4n2p/1N2pk1P/3Pp3/b4NPP/K7 w - - 0 1)

Arvidsson, K Erland

Nederlandse Bond van Probleemvrienden, 1932

1B1n1r2/2R2R1B/2PQ1b1r/4n2p/1N2pk1P/3Pp3/b4NPP/K7

#2

13 + 10

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh7
      • 2.Qxf6#
    • 1...Bb1
      • 2.Sd5#
    • 1...Bd5
      • 2.Sxd5#
    • 1...exd3
      • 2.Sbxd3#
      • 2.Qd4#
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxe4#
      • 1...Sxd3
        • 2.Sbxd3#
      • 1...Sexc6
        • 2.Rxc6#
      • 1...Sexf7
        • 2.Rxf7#
      • 1...Sg6
        • 2.Qxf6#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Sf3
        • 2.g3#
      • 1...Sc4
        • 2.Sd5#
      • 1...Sg4
        • 2.Sh3#
      • 1...Sd7
        • 2.Rcxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD,XB(L)::QAR2(I),XB(g)
    • B(a);N_GUARD::S(F)
    • B(a);N_GUARD::S(F),XB(a)
  • Actual
    • Q(I);N_PINS(e),P_PINP(c)
    • Threat
      • QAR1(I),XP(c)
    • Vars
      • S(e);P_PINQ(I),XP(E)::S(F),XS(e)
      • S(e);OGATE,P_PINQ(I),XP(H)::B(M)+R(J),XS(e)
      • S(e);N_SPINB(g),OGATE,P_PINQ(I),XR(K)::B(M)+R(J),XS(e)
      • S(e);OGATE,P_PINQ(I)::QAR2(I),XB(g)
      • B(a);N_GUARD::S(F),XB(a)
      • S(e);P_PINQ(I),SBLOCK::P(C)
      • S(e);P_PINQ(I),S_CUTB(a)::S(F)
      • S(e);P_PINQ(I),SBLOCK::S(B)
      • S(e);OGATEB,P_PINQ(I)::B(M)+R(J),XS(e)
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Developed and maintained by Brian Stephenson.
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