MESON Chess Problem Database

Problem Display
PID: 243705 (5b1K/PQ1pprpN/1P2k2n/1N3n2/B2p1P1p/6p1/b7/4r3 w - - 0 1)

Battaglia, Emilio

Themes-64, 1979

5b1K/PQ1pprpN/1P2k2n/1N3n2/B2p1P1p/6p1/b7/4r3

#2

8 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qe4#
    • 1...Rb1
      • 2.Qe4#
    • 1...Rc1
      • 2.Qe4#
    • 1...Rd1
      • 2.Qe4#
    • 1...Rf1
      • 2.Qe4#
    • 1...Rg1
      • 2.Qe4#
    • 1...Rh1
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rf6
      • 2.Sg5#
    • 1...Se3
      • 2.Qe4#
    • 1...Sd6
      • 2.Sxd4#
    • 1...d5
      • 2.Qc8#
    • 1...d6
      • 2.Sc7#
  • Tries
    • 1.Sxd4+?
      • 1...Sxd4
        • 2.Qxd7#
      • 1...Kd6!
    • 1.Bb3+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qc8#
      • 1...Bxb3!
    • 1.Qc6+?
      • 1...Sd6
        • 2.Sxd4#
      • 1...d6
        • 2.Sc7#
      • 1...dxc6!
  • Keys
    • 1.a8S!
      • threat
        • 2.Sac7#
      • 1...Rf6
        • 2.Sg5#
      • 1...Se3
        • 2.Qe4#
      • 1...Sd6
        • 2.Sxd4#
      • 1...Rc1
        • 2.Qe4#
      • 1...d5
        • 2.Qc8#
      • 1...d6
        • 2.Sbc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::QAR2(F)
    • R(a);N_GUARD::QAR2(F),XR(a)
    • R(k);SBLOCK::S(G)
    • S(f);S_CUTR(a)::QAR2(F)
    • S(f);N_GUARD,SBLOCK::S(C),XP(d)
    • P(i);OGATEB,SBLOCK::QAB(F)
    • P(i);SBLOCK::S(C)
  • Tries
    • Try
      • S(C);CHECK,XP(d)
      • Vars
        • S(f);XS(C)::QAB1(F),XP(i)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • B(A);CHECK
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(F);CHECK
      • Vars
        • S(f);P_SPINS(f)::S(C),XP(d)
        • P(i);P_SPINP(i)::S(C)
      • Refutation
        • P(i);XQ(F)
  • Actual
    • P(E);
    • Threat
      • S(E)
    • Vars
      • R(k);SBLOCK::S(G)
      • S(f);S_CUTR(a)::QAR2(F)
      • S(f);N_GUARD,SBLOCK::S(C),XP(d)
      • R(a);N_GUARD::QAR2(F)
      • P(i);OGATEB,SBLOCK::QAB(F)
      • P(i);SBLOCK::S(C)
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