MESON Chess Problem Database

Problem Display
PID: 75552 (b1r1N2B/R3P3/Rb5r/1P1kNp1B/K1p5/2Q1p1P1/8/8 w - - 0 1)

Lennon, Jean

di Scala, Pascal

2nd Prize, Skakbladet, 1962-1963

b1r1N2B/R3P3/Rb5r/1P1kNp1B/K1p5/2Q1p1P1/8/8

#2

11 + 8

133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bf3#
    • 1...Kc5
      • 2.Qxc4#
    • 1...Ke6
      • 2.Bf7#
    • 1...Rb8
      • 2.Qxc4#
    • 1...Rd8
      • 2.Qxc4#
    • 1...Bc5
      • 2.Bf3#
      • 2.Qxc4#
    • 1...Bc7
      • 2.Qxc4#
    • 1...Bc6
      • 2.Qxc4#
  • Tries
    • 1.Bf3+?
      • 1...Kc5
        • 2.Sd3#
        • 2.Sd7#
        • 2.Qxe3#
        • 2.Qxc4#
      • 1...Ke6!
    • 1.Rd7+?
      • 1...Ke4
        • 2.Bf3#
        • 2.Qc2#
      • 1...Kc5
        • 2.Sd3#
        • 2.Qb4#
        • 2.Qd4#
        • 2.Qa3#
        • 2.Qxe3#
        • 2.Qxc4#
      • 1...Ke6
        • 2.Bf7#
      • 1...Rd6!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Sf6#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6
        • 2.Sf4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bc7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::B(F)
    • K(c);P-FLIGHT,P_SPINP(b)::QAR1(A),XP(b)
    • K(c);P_SPINB(e),S_FLIGHT::B(F)
    • R(h);N_GUARD::QAB1(A),XP(b)
    • B(e);S_CUTR(h)::QAB1(A),XP(b)
    • B(g);P_PINP(D),S_CUTR(h)::QAB1(A),XP(b)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • K(c);P_SPINB(e),S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);P_SPINB(e),S_FLIGHT::B(F)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • S(E);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);S_FLIGHT::S(J)
      • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A)
      • K(c);P_SPINB(e),S_FLIGHT::S(E)
      • B(e);N_GUARD::QAR1(A),XB(e)
      • B(e);N_GUARD::QAR1(A)
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