MESON Chess Problem Database

Problem Display
PID: 58130 (4R3/3RQ2B/1p2N2B/2p1rr2/4k2K/q1b2Nn1/2npPp2/8 w - - 0 1)

Kowalewski, Edmund

Chess Life, 1958

4R3/3RQ2B/1p2N2B/2p1rr2/4k2K/q1b2Nn1/2npPp2/8

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sxc5#
    • 1...Ba1
      • 2.Sxd2#
    • 1...Bb2
      • 2.Sxd2#
    • 1...Bd4
      • 2.Sxd2#
    • 1...Se3
      • 2.Sfg5#
  • Tries
    • 1.Kxg3?
      • threat
        • 2.Qh4#
      • 1...Se3
        • 2.Sfg5#
        • 2.Seg5#
      • 1...f1S+!
  • Keys
    • 1.Sed4!
      • threat
        • 2.Qxe5#
      • 1...Rxe7
        • 2.Rexe7#
      • 1...Bxd4
        • 2.Sxd2#
      • 1...Sxe2
        • 2.Bxf5#
      • 1...Re6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(i);::QAR(G)+S(D),DCHECK,XP(h)
    • B(e);N_GUARD::S(B),XP(b)
    • S(a);SBLOCK::S(B)
  • Tries
    • Try
      • K(C);S_FLIGHT,XS(f)
      • Threat
        • QAR(G)
      • Refutation
        • P(c);CHECK
  • Actual
    • S(D);N_PINR(j),P_PINR(i)
    • Threat
      • QAR1(G),XR(i)
    • Vars
      • R(i);N_SPINR(i),OGATE,P_SPINR(j),XQ(G)::R(I),XR(i)
      • B(e);N_GUARD,XS(D)::S(B),XP(b)
      • S(f);N_GUARD,XP(A)::B(H),XR(j)
      • R(i);N_SPINR(i),OGATEB,P_SPINR(j)::QAR2(G),XR(i)
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