MESON Chess Problem Database

Problem Display
PID: 200841 (8/1Rq2nr1/2p2Q1p/2P2p1r/2N2kP1/2p2P1p/1b3K1P/5nB1 w - - 0 1)

Caplin, Aleksandr Borisovich

Sachova skladba, 1989

8/1Rq2nr1/2p2Q1p/2P2p1r/2N2kP1/2p2P1p/1b3K1P/5nB1

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Qxf5#
    • 1...Rhg5
      • 2.Qd4#
    • 1...Rgg5
      • 2.Qd4#
    • 1...Sxh2
      • 2.Bxh2#
    • 1...Sg3
      • 2.hxg3#
    • 1...Sg5
      • 2.Qxf5#
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sxb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Sd6#
      • 1...Qa5
        • 2.Sxa5#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qb6
        • 2.Sxb6#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qb8
        • 2.Sb6#
      • 1...Qd8
        • 2.Sd6#
      • 1...Qb7
        • 2.Sb6#
      • 1...Qd7
        • 2.Sd6#
      • 1...Qe7
        • 2.Se5#
      • 1...Ba1
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Sd6#
      • 1...Bc1
        • 2.Sb2#
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Sd6#
      • 1...Ba3
        • 2.Sxa3#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sg3
        • 2.hxg3#
      • 1...Se5
        • 2.Sxe5#
      • 1...Sg5
        • 2.Qxf5#
      • 1...Sd6
        • 2.Sxd6#
      • 1...c2
        • 2.Sxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::QAR1(H),XP(f)
    • R(g);SBLOCK::QAR2(H)
    • R(l);SBLOCK::QAR2(H)
    • S(a);OGATE,XP(C)::B(A),XS(a)
    • S(a);OGATE::P(C),XS(a)
    • S(k);S_CUTR(g)::QAR1(H),XP(f)
  • Actual
    • R(I);
    • Threat
      • DUALS(8)
    • Vars
      • Q(j);::R(I)+S(E),XQ(j)
      • Q(j);P_PINP(G)::R(I)+S(E),XQ(j)
      • Q(j);::R(I)+S(E)
      • B(b);::R(I)+S(E),XB(b)
      • S(a);::R(I)+S(E),XS(a)
      • S(a);OGATE::P(C),XS(a)
      • S(k);::R(I)+S(E),XS(k)
      • S(k);S_CUTR(g)::QAR1(H),XP(f)
      • P(c);::R(I)+S(E),XB(b)
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