MESON Chess Problem Database

Problem Display
PID: 72147 (8/KP1p4/2p1PP1R/4k2P/4nNP1/6BN/2B1P3/b2R1rQ1 w - - 0 1)

Buchwald, Julius

Chess, 1952

8/KP1p4/2p1PP1R/4k2P/4nNP1/6BN/2B1P3/b2R1rQ1

#2

14 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4+
      • 2.Qxd4#
    • 1...Sc3
      • 2.Qd4#
    • 1...Sd6
      • 2.Qc5#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Bb3#
      • 1...Kxe6!
    • 1.Qe3?
      • threat
        • 2.Qxe4#
      • 1...Bd4+
        • 2.Qxd4#
      • 1...d5
        • 2.b8Q#
        • 2.b8B#
      • 1...Rxd1!
    • 1.b8Q+?
      • 1...Sd6
        • 2.Qe3#
        • 2.Qc5#
        • 2.Qxd6#
      • 1...d6!
    • 1.b8B+?
      • 1...Sd6
        • 2.Bxd6#
        • 2.Qe3#
        • 2.Qc5#
      • 1...d6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sd3#
      • 1...Bd4+
        • 2.Qxd4#
      • 1...Kxd6
        • 2.b8Q#
        • 2.b8B#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Sxg3
        • 2.Qc5#
      • 1...Sxd6
        • 2.Qc5#
      • 1...Sxf6
        • 2.Sg6#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sf2
        • 2.Sg2#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sg5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
    • S(c);S_CUTB(a)::QAB1(B)
    • S(c);N_GUARD,S_CUTP(f)::QAR2(B)
    • P(e);N_GUARD::R1(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT::B(C)
      • Refutation
        • K(d);P-FLIGHT,XP(J)
    • Try
      • Q(B);P_PINS(c)
      • Threat
        • QAR1(B),XS(c)
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
        • P(f);N_GUARD::P=Q
      • Refutation
        • R(b);XR(A)
    • Try
      • P(N);CHECK
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • P(N);CHECK
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • R(A);
    • Threat
      • B(E)+S(G),DCHECK
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
      • K(d);S_FLIGHT,XR(A)::P=Q
      • R(b);OGATE,P_SPINR(b),XS(G)::B(E),XR(b)
      • S(c);N_GUARD,XB(E)::QAR2(B)
      • S(c);N_GUARD,XR(A)::QAR2(B)
      • S(c);SBLOCK,XP(K)::B(E)+S(G),DCHECK
      • S(c);N_GUARD::QAR2(B)
      • S(c);N_GUARD,S_CUTR(b)::B(E)+S(G)
      • S(c);S_CUTB(a)::QAB1(B)
      • S(c);N_GUARD::QAR2(B),XS(c)
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