MESON Chess Problem Database

Problem Display
PID: 251597 (3R4/B1NrQ3/Bn2p3/q3p3/2b1kPK1/4P3/2P1pP1p/1N6 w - - 0 1)

Zaragoza, Luis

Problemas, 2021

3R4/B1NrQ3/Bn2p3/q3p3/2b1kPK1/4P3/2P1pP1p/1N6

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qa4
      • 2.Sc3#
    • 1...Qb5
      • 2.Sc3#
    • 1...Qc5
      • 2.Sc3#
    • 1...Qd5
      • 2.Sc3#
    • 1...Qxa6
      • 2.Sc3#
    • 1...Rd1
      • 2.Qh7#
    • 1...Rd2
      • 2.Qh7#
    • 1...Rd3
      • 2.Qh7#
    • 1...Rd4
      • 2.Qh7#
    • 1...Rd5
      • 2.Qh7#
    • 1...Rd6
      • 2.Qh7#
    • 1...Rxd8
      • 2.Qh7#
    • 1...Bd5
      • 2.Bd3#
    • 1...Sa4
      • 2.f3#
    • 1...Sd5
      • 2.f3#
    • 1...Sa8
      • 2.f3#
    • 1...Sc8
      • 2.f3#
  • Tries
    • 1.Sd2+?
      • 1...Rxd2
        • 2.Qh7#
      • 1...Qxd2!
    • 1.Se8?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Bb7#
      • 1...Sd5
        • 2.f3#
      • 1...exf4!
    • 1.Bb7+?
      • 1...Qd5
        • 2.Sd2#
        • 2.Sc3#
      • 1...Rd5
        • 2.Qh7#
      • 1...Sd5
        • 2.f3#
      • 1...Bd5!
    • 1.Qf7?
      • threat
        • 2.Qg6#
      • 1...exf4
        • 2.Qxf4#
      • 1...Rxf7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Qxd5
        • 2.Sc3#
      • 1...Rxd5
        • 2.Qh7#
      • 1...Bxd5
        • 2.Bd3#
      • 1...Sxd5
        • 2.f3#
      • 1...exf4
        • 2.Qxe6#
      • 1...exd5
        • 2.Qxe5#

This is after

After Dante H. Rizzetti.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 15
  • Sets
    • Q(e);N_GUARD::S(A),XQ(e)
    • Q(e);N_GUARD::S(A)
    • Q(e);N_GUARD,XB(G)::S(A)
    • R(i);N_GUARD::QAB(J)
    • R(i);N_GUARD,XR(K)::QAB(J)
    • B(c);OGATE::B(G)
    • S(g);::P(C)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(i);XS(A)::QAB(J)
      • Refutation
        • Q(e);XS(A)
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • K(d);P_SPINR(i),S_CUTB(c),S_CUTQ(e),S_CUTS(g),S_FLIGHT::B(G)
        • S(g);SBLOCK::P(C)
      • Refutation
        • P(f);P_SPINP(h),XP(E)
    • Try
      • B(G);CHECK
      • Vars
        • R(i);P_SPINR(i)::QAB(J)
        • S(g);P_SPINS(g)::P(C)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • P(f);OGATE,XP(E)::QAR1(J),XP(f)
      • Refutation
        • R(i);XQ(J)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • K(d);OGATEB,P_SPINR(i),S_FLIGHT,XS(I)::B(G)
      • Q(e);N_GUARD,XS(I)::S(A)
      • R(i);N_GUARD,XS(I)::QAB(J)
      • B(c);OGATE,SBLOCK,XS(I)::B(G)
      • S(g);SBLOCK,XS(I)::P(C)
      • P(f);OGATEB,P_SPINP(h),XP(E)::QAR2(J),XP(h)
      • P(h);OGATE,P_SPINP(f),XS(I)::QAR1(J),XP(f)
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