MESON Chess Problem Database

Problem Display
PID: 146388 (r3Q3/b2R4/1p2p3/1kNP2nb/1p4r1/1K1N2p1/4B2q/R7 w - - 0 1)

Lipton, Michael

The Problemist, 2012

r3Q3/b2R4/1p2p3/1kNP2nb/1p4r1/1K1N2p1/4B2q/R7

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Rf7#
    • 1...Sf7
      • 2.Rd8#
    • 1...bxc5
      • 2.Rb7#
  • Tries
    • 1.Ra5+?
      • 1...bxa5
        • 2.Rb7#
      • 1...Kxa5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sd6#
      • 1...exd5
        • 2.Rxd5#
      • 1...Bb8
        • 2.Rf7#
      • 1...Se4
        • 2.Sf2#
      • 1...Sf7
        • 2.Rd8#
      • 1...g2
        • 2.Sf4#

This is a version of 146387

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(j);S_CUTR(k)::QAB(H)+R(G)
    • S(f);S_CUTB(g)::QAB(H)+R(G)
    • P(h);XS(E)::QAB(H)+R(G),DCHECK
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(h);SBLOCK,XR(A)::QAB(H)+R(G),DCHECK
      • Refutation
        • K(e);P-FLIGHT,XR(A)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(i);OGATE,XP(F)::QAB(H)+R(G),DCHECK,XP(i)
      • B(j);S_CUTR(k)::QAB(H)+R(G)
      • S(f);S_CUTR(d)::B(B)+S(D)
      • S(f);S_CUTB(g)::QAB(H)+R(G)
      • P(b);S_CUTQ(a)::B(B)+S(D)
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