MESON Chess Problem Database

Problem Display
PID: 70259 (4N2B/1K6/4p1p1/2pkp1Rb/1p5r/5pb1/2N1Qn2/6qB w - - 0 1)

May, Willy Paul

Chess, 1950

4N2B/1K6/4p1p1/2pkp1Rb/1p5r/5pb1/2N1Qn2/6qB

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Rxe5#
    • 1...Sg4
      • 2.Bxf3#
  • Tries
    • 1.Qd3+?
      • 1...Rd4
        • 2.Se3#
      • 1...Sxd3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Qc4#
      • 1...c4
        • 2.Qc6#
      • 1...Rf4
        • 2.Rxe5#
      • 1...Se4
        • 2.Sc7#
      • 1...Sg4
        • 2.Bxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);S_CUTB(d)::R1(D),XP(i)
    • S(b);N_GUARD,S_CUTB(j),S_CUTR(f)::B(A),XP(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • R(f);P_SPINR(f)::S(B)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • K(h);S_FLIGHT::QAR2(C)
      • P(g);::QAB1(C)
      • R(f);S_CUTB(d)::R1(D),XP(i)
      • S(b);N_SPINP(c),P_SPINP(i),SBLOCK::S(F)
      • S(b);N_GUARD,S_CUTB(j),S_CUTR(f)::B(A),XP(c)
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