MESON Chess Problem Database

Problem Display
PID: 101608 (QB1n4/1B1q1N2/2R1n3/3r1Pp1/3pk1K1/3p4/3Pp3/8 w - - 0 1)

Debarbieux, Gerard

diagrammes, 1989

QB1n4/1B1q1N2/2R1n3/3r1Pp1/3pk1K1/3p4/3Pp3/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Rxe6#
    • 1...Rb5
      • 2.Rxe6#
    • 1...Rc5
      • 2.Rxe6#
    • 1...Rxf5
      • 2.Rxe6#
    • 1...Sf4
      • 2.Sxg5#
    • 1...Sc5
      • 2.Sxg5#
    • 1...Sg7
      • 2.Sxg5#
    • 1...Sf8
      • 2.Sxg5#
  • Tries
    • 1.Rxe6+?
      • 1...Qxe6
        • 2.Sxg5#
      • 1...Sxe6!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qh1#
      • 1...Rxf5
        • 2.Rxe6#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Sf4
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(e);::B(E)+R(D),DCHECK,XS(g)
    • R(e);XP(C)::B(E)+R(D),DCHECK,XS(g)
    • S(g);N_GUARD,P_PINP(C)::S(F),XP(f)
  • Tries
    • Try
      • R(D);CHECK,P_PINR(e),XS(g)
      • Vars
        • Q(h);P_PINP(C),XR(D)::S(F),XP(f)
      • Refutation
        • S(i);XR(D)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • R(e);XP(C)::B(E)+R(D),DCHECK,XS(g)
      • P(a);OGATEB::QAR(G),XQ(a)
      • P(a);OGATEB::QAR(G),XS(a)
      • P(a);OGATEB::QAR(G),XB(a)
      • P(a);OGATEB::QAR(G),XR(a)
      • S(g);N_GUARD,P_PINP(C)::S(F),XP(f)
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Developed and maintained by Brian Stephenson.
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