MESON Chess Problem Database

Problem Display
PID: 23849 (4R3/r2NP1bK/1R1pkpPp/p2r4/B4P2/B3PNnP/p1Q1p3/8 w - - 0 1)

Shire, David J

Schach-Aktiv, 1997

4R3/r2NP1bK/1R1pkpPp/p2r4/B4P2/B3PNnP/p1Q1p3/8

#2

13 + 11

4849 The Sushkov Theme 1999
3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Rxd6#
    • 1...Re5
      • 2.Rxd6#
    • 1...Rf5
      • 2.Rxd6#
    • 1...Rg5
      • 2.Rxd6#
    • 1...Rh5
      • 2.Rxd6#
    • 1...Bf8
      • 2.Sxf8#
      • 2.exf8Q#
      • 2.exf8S#
      • 2.exf8B#
      • 2.exf8R#
    • 1...Bh8
      • 2.Sf8#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Sc5#
        • 2.Rxd6#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Rxd7
        • 2.Sd4#
      • 1...Ra6
        • 2.Sc5#
      • 1...Rc7
        • 2.Rxd6#
      • 1...Sf5
        • 2.Sc5#
      • 1...f5
        • 2.Rxd6#
      • 1...Se4!
    • 1.Qe4+?
      • 1...Re5
        • 2.Sd4#
        • 2.Sc5#
        • 2.Rxd6#
      • 1...Sxe4!
    • 1.f5+?
      • 1...Rxf5
        • 2.Rxd6#
      • 1...Sxf5!
  • Keys
    • 1.Qxa2!
      • threat
        • 2.Sd4#
      • 1...Kf5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Sc5#
      • 1...f5
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD::R1(H),XP(f)
    • B(k);N_GUARD::S(J)
  • Tries
    • Try
      • B(F);P_PINR(e)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);N_SPINP(f),N_SPINR(e),OGATEB,S_FLIGHT,XS(J)::QAB1(A)
        • R(j);SBLOCK,XS(J)::S(D)
        • R(j);::S(J)
        • R(j);::R1(H),XP(f)
        • S(c);::S(J)
        • P(h);::R1(H),XP(f)
      • Refutation
        • S(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • S(c);XQ(A)
    • Try
      • P(G);CHECK
      • Vars
        • R(e);XP(G)::R1(H),XP(f)
      • Refutation
        • S(c);XP(G)
  • Actual
    • Q(A);P_PINR(e),XP(a)
    • Threat
      • S(D)
    • Vars
      • K(g);N_SPINP(f),N_SPINR(e),S_FLIGHT::QAR2(A),XR(e)
      • S(c);SBLOCK::S(J)
      • P(h);SBLOCK::R1(H),XP(f)
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