MESON Chess Problem Database

Problem Display
PID: 106896 (b2rB2b/3n3Q/R2p1B2/2k1np2/P5p1/P1N2pq1/KN1R4/8 w - - 0 1)

Grunenwald, Alphonse

Herpai TT, 1951

b2rB2b/3n3Q/R2p1B2/2k1np2/P5p1/P1N2pq1/KN1R4/8

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5+
      • 2.Rxd5#
    • 1...Sc4
      • 2.Sd3#
    • 1...Sc6
      • 2.Rd5#
    • 1...Sb6
      • 2.Ra5#
    • 1...Sxf6
      • 2.Qa7#
    • 1...Sb8
      • 2.Qa7#
    • 1...Sf8
      • 2.Qa7#
    • 1...d5
      • 2.Be7#
      • 2.Qe7#
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxd6#
      • 1...Bd5+
        • 2.Rxd5#
      • 1...Sxf6
        • 2.Qa7#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg6
        • 2.Qe3#
      • 1...Sf7
        • 2.Qe3#
      • 1...Sb6
        • 2.Ra5#
      • 1...Sb8
        • 2.Qa7#
      • 1...Sf8
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(i);CHECK,N_GUARD::R1(C),XB(i)
    • S(e);N_GUARD,SBLOCK::S(B)
    • S(e);S_CUTB(i)::R1(C)
    • S(h);SBLOCK::R(G)
    • S(h);OGATE,XB(H)::QAB(I)
    • S(h);OGATE::QAB(I)
  • Actual
    • Q(I);P_PINP(g)
    • Threat
      • QAB1(I),XP(g)
    • Vars
      • B(i);CHECK,N_GUARD::R1(C),XB(i)
      • S(h);OGATE,XB(H)::QAB(I)
      • S(e);OGATE::QAB(I)
      • S(e);N_GUARD,SBLOCK::S(B)
      • S(e);S_CUTB(i)::R1(C)
      • S(h);SBLOCK::R(G)
      • S(h);OGATE::QAB(I)
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Developed and maintained by Brian Stephenson.
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