MESON Chess Problem Database

Problem Display
PID: 78293 (Q1bN2r1/1rPn4/3pp3/1N1k1p2/3P1R2/1pKP4/2P3q1/7B w - - 0 1)

Cheylan, Yves

1st HM., Onkoud-25 JT, 1998

Q1bN2r1/1rPn4/3pp3/1N1k1p2/3P1R2/1pKP4/2P3q1/7B

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Bxf3#
    • 1...Rxd8
      • 2.Bxg2#
    • 1...Re8
      • 2.Bxg2#
    • 1...Rf8
      • 2.Bxg2#
    • 1...Rh8
      • 2.Bxg2#
    • 1...bxc2
      • 2.Qa2#
    • 1...b2
      • 2.Qa2#
  • Tries
    • 1.Kb4?
      • threat
        • 2.c4#
      • 1...Rxd8
        • 2.Bxg2#
      • 1...bxc2
        • 2.Qa2#
      • 1...Sb6
        • 2.Sc3#
      • 1...Se5!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Sc3#
      • 1...Rxd8
        • 2.Bxg2#
      • 1...bxc2
        • 2.Qa2#
      • 1...Qe4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(a);OGATE,P_PINP(D)::B(A),XQ(a)
    • R(j);N_GUARD,XS(J)::B(A),XQ(a)
    • R(j);N_GUARD::B(A),XQ(a)
    • P(b);OGATEB,XP(B)::QAB(I)
    • P(b);OGATEB::QAB(I)
  • Tries
    • Try
      • K(C);P_SPINS(G),S_FLIGHT
      • Threat
        • P(B)
      • Vars
        • R(j);N_GUARD,XS(J)::B(A),XQ(a)
        • P(b);OGATEB,XP(B)::QAB(I)
        • S(h);N_PINS(G)::S(G)
      • Refutation
        • S(h);
  • Actual
    • K(C);P_SPINP(B),S_FLIGHT
    • Threat
      • S(G)
    • Vars
      • R(j);N_GUARD,XS(J)::B(A),XQ(a)
      • P(b);OGATEB,P_PINS(G),XP(B)::QAB(I)
      • Q(a);N_PINP(B)::P(B)
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