MESON Chess Problem Database

Problem Display
PID: 134474 (1B3N2/1PQ4B/1p3P2/Rn1kn1r1/1P2N3/2P5/3p3b/K2R1b1q w - - 0 1)

Eaton, Vincent Lanius

7th HM., Olympic Ty., 1948

1B3N2/1PQ4B/1p3P2/Rn1kn1r1/1P2N3/2P5/3p3b/K2R1b1q

#2

12 + 9

14617 Olympic Ty. Award (1948) 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Rxb5#
    • 1...Bh3
      • 2.Rxb5#
    • 1...Bc4
      • 2.Qd6#
    • 1...Sc4
      • 2.Rxb5#
    • 1...Sc6
      • 2.Qf7#
    • 1...bxa5
      • 2.Qc5#
  • Tries
    • 1.Rxd2+?
      • 1...Sd3
        • 2.Rxb5#
      • 1...Bd3+!
  • Keys
    • 1.Sxd2!
      • threat
        • 2.Qd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sf3
        • 2.Be4#
      • 1...Sc4
        • 2.Rxb5#
      • 1...Sg4
        • 2.Sxf1#
      • 1...Sc6
        • 2.Qf7#
      • 1...Sg6
        • 2.Bg8#
      • 1...Sd7
        • 2.Sxf1#
      • 1...Sf7
        • 2.Sxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD,P_PINR(B)::R(F),XS(e)
    • B(a);P_PINR(B),SBLOCK::QAR1(I)
    • S(g);S_CUTB(a)::R(F),XS(e)
    • S(g);N_GUARD,SBLOCK::QAB(I)
    • P(i);N_GUARD,N_SPINS(e),XR(F)::QAR1(I)
  • Tries
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • S(g);N_SPINS(e),P_SPINS(g)::R(F),XS(e)
      • Refutation
        • B(a);CHECK,P_SPINB(a)
  • Actual
    • S(E);XP(c)
    • Threat
      • QAR1(I)
    • Vars
      • P(i);N_GUARD,N_SPINS(e),XR(F)::QAR1(I)
      • S(g);N_GUARD,S_CUTB(a)::QAB1(I)
      • S(g);S_CUTQ(b)::B(J)
      • S(g);S_CUTB(a)::R(F),XS(e)
      • S(g);N_GUARD::R(B)+S(E),XB(a)
      • S(g);N_GUARD,SBLOCK::QAB(I)
      • S(g);N_GUARD,S_CUTR(h)::B(J)
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