MESON Chess Problem Database

Problem Display
PID: 73480 (1BKRR3/4N2B/2p1p3/3b1pP1/r2nk1pn/r3PNP1/p1PP4/7Q w - - 0 1)

Buchwald, Julius

Comm., Probleemblad, 1951

1BKRR3/4N2B/2p1p3/3b1pP1/r2nk1pn/r3PNP1/p1PP4/7Q

#2

13 + 11

5759 Selected Compositions of Julius Buchwald 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Rxd4#
    • 1...Se2
      • 2.Sxh4#
    • 1...Sb3
      • 2.Sxh4#
    • 1...Sb5
      • 2.Sxh4#
    • 1...Sg6
      • 2.Sxd4#
    • 1...gxf3
      • 2.Qxh4#
  • Tries
    • 1.Sxd4+?
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sf3!
    • 1.Bxf5+?
      • 1...Sdxf5
        • 2.Sxh4#
      • 1...Shxf5
        • 2.Sxd4#
      • 1...exf5!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sd6#
      • 1...Sdxf3
        • 2.Sxh4#
      • 1...Sdxf5
        • 2.Sxh4#
      • 1...Shxf3
        • 2.Sxd4#
      • 1...Shxf5
        • 2.Sxd4#
      • 1...gxf3
        • 2.Qxh4#
      • 1...Sg2
        • 2.S5xd4#
      • 1...Bb3
        • 2.d3#
      • 1...Bc4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • B(h);OGATE::R1(L),XS(d)
    • S(d);N_GUARD::QAB(A)+S(E),XS(g)
    • S(g);N_GUARD,N_SPINP(i)::QAB(A)+S(E),XS(d)
    • P(f);N_SPINP(i),OGATEB,P_SPINP(f),SBLOCK,XS(E)::QAR(A),XS(g)
  • Tries
    • Try
      • S(E);CHECK,XS(d)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB(A),XS(g)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • B(I);CHECK,XP(i)
      • Vars
        • S(d);XB(I)::QAB(A)+S(E),XS(g)
        • S(g);XB(I)::QAB(A)+S(E),XS(d)
      • Refutation
        • P(k);XB(I)
  • Actual
    • S(H);P_PINP(k),XP(i)
    • Threat
      • B(I)+S(H),DCHECK
    • Vars
      • S(d);N_GUARD,P_SPINS(d),XS(E)::B(I)+S(H),XS(g)
      • S(d);N_GUARD,P_SPINS(d),XS(H)::QAB(A)+S(E),XS(g)
      • S(g);N_GUARD,P_SPINS(g),XS(E)::B(I)+S(H),XS(d)
      • S(g);N_GUARD,P_SPINS(g),XS(H)::QAB(A)+S(E),XS(d)
      • P(f);N_SPINP(k),OGATEB,P_SPINP(f),SBLOCK,XS(E)::QAR(A),XS(g)
      • S(g);N_GUARD::B(I)+S(H),XS(d)
      • B(h);S_CUTR(b)::P(C)
      • B(h);OGATE::R1(L),XS(d)
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