MESON Chess Problem Database

Problem Display
PID: 121555 (Q7/2Pr4/8/2PNkB2/1Pb3P1/4B3/8/2K5 w - - 0 1)

Leopold, Dr Rudolf L

Deutsche Schachzeitung, 1916

Q7/2Pr4/8/2PNkB2/1Pb3P1/4B3/8/2K5

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Qh8#
    • 1...Bxd5
      • 2.Qa1#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qe6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Re7
        • 2.Qd6#
      • 1...Bxd5!
    • 1.Qa6?
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Qe6#
      • 1...Bxd5
        • 2.Qa1#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Re7
        • 2.Qd6#
      • 1...Bxa6!
    • 1.Qe8+?
      • 1...Kxd5
        • 2.Be4#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Re7!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Bc3#
      • 1...Kd4
        • 2.Bc3#
      • 1...Rxd5
        • 2.Qh8#
      • 1...Bxd5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,SBLOCK,XS(F)::QAB(I)
    • B(a);SBLOCK,XS(F)::QAB(I)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • R(c);N_GUARD::QAB1(I),XR(c)
        • R(c);N_GUARD::QAB1(I)
      • Refutation
        • B(a);XS(F)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(b);P-FLIGHT,XS(F)::QAB1(I)
        • B(a);SBLOCK,XS(F)::QAB(I)
        • R(c);N_GUARD::QAB1(I),XR(c)
        • R(c);N_GUARD::QAB1(I)
      • Refutation
        • B(a);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • K(b);S_FLIGHT::B(B)
      • R(c);N_GUARD,SBLOCK,XS(F)::QAB(I)
      • B(a);SBLOCK,XS(F)::QAB(I)
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