MESON Chess Problem Database

Problem Display
PID: 43381 (5n2/q2p1Q1b/p1p5/3NP1p1/1pBPk1rp/R5P1/3Rrp1N/2b3nK w - - 0 1)

Clark, Cecil Henry Douglas

5th Comm., BCF 039. Ty., 1941-1942

5n2/q2p1Q1b/p1p5/3NP1p1/1pBPk1rp/R5P1/3Rrp1N/2b3nK

#2

10 + 15

1101 BCSC Final 2002-2003

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Rxe3#
    • 1...Bf5
      • 2.Sf6#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
    • 1...Se6
      • 2.Qxh7#
    • 1...cxd5
      • 2.Bxd5#
  • Tries
    • 1.Sc3+?
      • 1...Ke3
        • 2.Sf1#
      • 1...bxc3!
    • 1.Qf5+?
      • 1...Bxf5
        • 2.Sf6#
      • 1...Kxf5!
    • 1.Qxh7+?
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sxh7!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Bd3#
      • 1...Qxd4
        • 2.Rxd4#
      • 1...Rxd2
        • 2.Re3#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...cxd5
        • 2.Bxd5#
      • 1...Re3
        • 2.Rxe3#
      • 1...Rf4
        • 2.Sxg5#
      • 1...Bf5
        • 2.Sf6#
      • 1...Se6
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::R1(D),XR(c)
    • B(n);SBLOCK::S(H)
    • S(b);N_GUARD::QAB1(J),XS(b)
    • S(b);N_GUARD::QAB1(J)
    • S(o);N_GUARD::QAB(J),XB(n)
    • P(k);OGATE,XS(H)::B(F),XP(k)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT::S(C)
      • Refutation
        • P(e);XS(H)
    • Try
      • Q(J);CHECK
      • Vars
        • B(n);SBLOCK,XQ(J)::S(H)
      • Refutation
        • K(f);S_FLIGHT,XQ(J)
    • Try
      • Q(J);CHECK,XB(n)
      • Vars
        • S(o);N_GUARD,P_SPINS(o)::QAB(J),XS(o)
      • Refutation
        • S(o);XQ(J)
  • Actual
    • S(C);
    • Threat
      • B(F)
    • Vars
      • Q(l);OGATE,XP(G)::R1(B),XQ(l)
      • R(c);N_GUARD,XR(B)::R1(D)
      • S(b);OGATE,XS(C)::QAB1(J),XS(b)
      • P(k);OGATE,XS(H)::B(F),XP(k)
      • R(c);N_GUARD::R1(D),XR(c)
      • R(g);N_GUARD::S(C),XP(i)
      • B(n);SBLOCK::S(H)
      • S(o);N_GUARD::QAB(J),XB(n)
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