MESON Chess Problem Database

Problem Display
PID: 69337 (bN1R4/6pK/6B1/2P1kP2/1p3N1Q/2n1pP2/1Bn4b/3r4 w - - 0 1)

Buchwald, Julius

Chess Life, 1968

bN1R4/6pK/6B1/2P1kP2/1p3N1Q/2n1pP2/1Bn4b/3r4

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sd3#
    • 1...Rb1
      • 2.Sd3#
    • 1...Rc1
      • 2.Sd3#
    • 1...Re1
      • 2.Sd3#
    • 1...Rf1
      • 2.Sd3#
    • 1...Rg1
      • 2.Sd3#
    • 1...Rh1
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rd4
      • 2.Re8#
    • 1...Bxf4
      • 2.Qe7#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Sd4
      • 2.Sd7#
  • Tries
    • 1.Bxc3+?
      • 1...Rd4
        • 2.Sd3#
        • 2.Sd7#
        • 2.Re8#
      • 1...Sd4
        • 2.Sd7#
        • 2.Re8#
      • 1...bxc3!
    • 1.Rxd1?
      • threat
        • 2.Sd7#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Bxf3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qe4#
      • 1...Rxd5
        • 2.Re8#
      • 1...Bxd5
        • 2.Sd7#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Rd4
        • 2.Qe7#
      • 1...Sd4
        • 2.Qxh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::S(C)
    • R(a);N_GUARD::S(C),XR(a)
    • R(a);N_SPINS(d),SBLOCK::R(J)
    • B(c);SBLOCK,XS(C)::QAR2(D)
    • B(i);N_GUARD::S(I),XB(i)
    • S(b);N_SPINS(d),SBLOCK,S_CUTR(a)::S(I)
  • Tries
    • Try
      • B(A);CHECK,XS(d)
      • Refutation
        • P(f);XB(A)
    • Try
      • R(J);XR(a)
      • Threat
        • S(I)
      • Vars
        • B(i);N_GUARD::S(I),XB(i)
      • Refutation
        • B(i);XP(B)
  • Actual
    • S(C);
    • Threat
      • QAR1(D)
    • Vars
      • R(a);SBLOCK,XS(C)::R(J)
      • B(i);SBLOCK,XS(C)::S(I)
      • B(c);N_GUARD::QAB1(D),XB(c)
      • R(a);N_SPINS(d),SBLOCK::QAR2(D)
      • S(b);N_SPINS(d),SBLOCK::QAB(D),XB(c)
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