MESON Chess Problem Database

Problem Display
PID: 129816 (2B1kB2/n1P5/6p1/5RK1/3P4/1r2p3/4Q3/2n5 w - - 0 1)

Cauveren, Jonas Ephraim

Nederlandse Schaaktijdschrift, 1908

2B1kB2/n1P5/6p1/5RK1/3P4/1r2p3/4Q3/2n5

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qxe3#
    • 1...Rb2
      • 2.Qxe3#
    • 1...Rb4
      • 2.Qxe3#
    • 1...Rb7
      • 2.Qxe3#
    • 1...Rb8
      • 2.Qxe3#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Rf8#
      • 1...gxf5
        • 2.Qh5#
      • 1...Sxc8!
    • 1.Qc4?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sxc8
        • 2.Qf7#
        • 2.Qc6#
      • 1...Rb6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
        • 2.Qxc6#
      • 1...gxf5!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Rf8#
      • 1...Rxb4
        • 2.Qxe3#
      • 1...Sxc8
        • 2.Qb5#
      • 1...gxf5
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAR(A),XP(c)
  • Tries
    • Try
      • B(G);
      • Threat
        • R1(C)
      • Vars
        • P(d);OGATEB,XR(C)::QAB(A)
      • Refutation
        • S(e);XB(F)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(A)
      • Refutation
        • P(d);XR(C)
  • Actual
    • B(G);
    • Threat
      • R1(C)
    • Vars
      • R(b);N_GUARD,XB(G)::QAR(A),XP(c)
      • S(e);N_GUARD,XB(F)::QAB(A)
      • P(d);OGATEB,XR(C)::QAB(A)
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