MESON Chess Problem Database

Problem Display
PID: 156307 (2R3b1/b2P3q/K2P4/P1P1Q3/RBkn1N2/Ppp5/1p1p4/2r5 w - - 0 1)

Robert, Philippe

Best Problems, 2006

2R3b1/b2P3q/K2P4/P1P1Q3/RBkn1N2/Ppp5/1p1p4/2r5

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Bxc5#
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sc2
      • 2.Qxc3#
    • 1...Se2
      • 2.Bxc3#
    • 1...Sf3
      • 2.Bxc3#
    • 1...Sb5
      • 2.Bxc3#
    • 1...Sf5
      • 2.Bxc3#
    • 1...Se6
      • 2.Bxc3#
      • 2.Qd5#
    • 1...c2
      • 2.Bxd2#
  • Tries
    • 1.Qe2+?
      • 1...Qd3
        • 2.Qxd3#
      • 1...Sxe2!
    • 1.Qe3?
      • threat
        • 2.Bxc3#
      • 1...Qxd7
        • 2.Qd3#
      • 1...Qd3
        • 2.Qxd3#
      • 1...Sc2
        • 2.Qxc3#
      • 1...c2
        • 2.Bxd2#
        • 2.Bc3#
        • 2.Qc3#
      • 1...Sc6!
  • Keys
    • 1.c6!
      • threat
        • 2.Bc5#
      • 1...Sxc6
        • 2.Bxc3#
      • 1...Bc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qxc3#
      • 1...c2
        • 2.Bxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(j);N_GUARD::QAB1(G),XB(j)
    • S(g);OGATE::QAR1(G),XP(e)
    • S(g);::R(B)+B(C),XP(e)
    • P(e);OGATE::R(B)+B(C),XP(c)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAB1(G),XQ(i)
      • Refutation
        • S(g);XQ(G)
    • Try
      • Q(G);
      • Threat
        • R(B)+B(C),XP(e)
      • Vars
        • Q(i);N_GUARD,XP(J)::QAB1(G)
        • Q(i);N_GUARD::QAB1(G),XQ(i)
        • S(g);S_CUTR(a)::QAR1(G),XP(e)
      • Refutation
        • S(g);
  • Actual
    • P(F);
    • Threat
      • R(B)+B(C)
    • Vars
      • S(g);P_SPINS(g),XP(F)::R(B)+B(C),XP(e)
      • B(j);N_GUARD::QAB1(G),XB(j)
      • S(g);OGATE::QAR1(G),XP(e)
      • P(e);OGATE::R(B)+B(C),XP(c)
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Developed and maintained by Brian Stephenson.
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