MESON Chess Problem Database

Problem Display
PID: 21425 (8/3p3p/1Q5P/3pk1bR/2p2NP1/1pK2P1n/1R3P2/2B3n1 w - - 0 1)

Kemp, Charles Edward

5th Prize, BCPJ (June), 1919

8/3p3p/1Q5P/3pk1bR/2p2NP1/1pK2P1n/1R3P2/2B3n1

#2

10 + 9

5294 BCPJ (August) 1919
15044 Kemp Archive 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Se2+
      • 2.Rxe2#
    • 1...Sxf3
      • 2.Re2#
    • 1...Sxf2
      • 2.Rxg5#
    • 1...Sxf4
      • 2.Rxg5#
    • 1...d4+
      • 2.Qxd4#
    • 1...d6
      • 2.Qd4#
  • Tries
    • 1.Qc7+?
      • 1...d6
        • 2.Qe7#
        • 2.Qg7#
      • 1...Kf6!
    • 1.Qb8+?
      • 1...d6
        • 2.Qh8#
      • 1...Kf6!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Rxd5#
      • 1...Se2+
        • 2.Rxe2#
      • 1...d4+
        • 2.Qxd4#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxf3
        • 2.Re2#
      • 1...Sxf4
        • 2.Rxg5#
      • 1...d6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(a);CHECK,N_GUARD::R(B),XS(a)
    • S(a);N_GUARD,XP(E)::R(B)
    • S(c);N_GUARD,XP(C)::R(H),XB(g)
    • S(c);N_GUARD,XS(F)::R(H),XB(g)
    • P(e);CHECK::QAB1(I),XP(e)
    • P(h);SBLOCK::QAB1(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Refutation
        • K(f);N_SPINB(g),S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • P(h);P_SPINP(h),SBLOCK::QAB(I)
      • Refutation
        • K(f);N_SPINB(g),S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(e)
    • Vars
      • S(a);CHECK,N_GUARD::R(B),XS(a)
      • P(e);CHECK::QAB1(I),XP(e)
      • K(f);N_SPINB(g),S_FLIGHT,XS(F)::QAB1(I)
      • S(a);N_GUARD,XP(E)::R(B)
      • S(c);N_GUARD,SBLOCK,XS(F)::R(H),XB(g)
      • P(h);SBLOCK::QAB1(I)
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