MESON Chess Problem Database

Problem Display
PID: 23283 (bB6/qnNp4/4p3/n1R1P3/rp1k4/3P2p1/2P1K3/b3QN1B w - - 0 1)

Zarur, Almiro Elias

The Problemist, 1997

bB6/qnNp4/4p3/n1R1P3/rp1k4/3P2p1/2P1K3/b3QN1B

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Bxa7#
    • 1...Sxc5
      • 2.Sb5#
    • 1...g2
      • 2.Qf2#
    • 1...d5
      • 2.Sxe6#
    • 1...d6
      • 2.Sxe6#
  • Tries
    • 1.Kd1?
      • threat
        • 2.Qe3#
      • 1...Kxc5
        • 2.Bxa7#
      • 1...Sxc5
        • 2.Sb5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Qxc5!
    • 1.Sh2?
      • threat
        • 2.Qg1#
      • 1...Kxc5
        • 2.Bxa7#
      • 1...Qxc5
        • 2.Sf3#
      • 1...Sxc5
        • 2.Sb5#
      • 1...gxh2
        • 2.Qf2#
      • 1...d5
        • 2.Sxe6#
      • 1...Sc4!
    • 1.Bxa7?
      • threat
        • 2.Sb5#
        • 2.Rd5#
      • 1...d5
        • 2.Rxd5#
      • 1...Sd6
        • 2.Rxa5#
        • 2.Rb5#
        • 2.Rd5#
      • 1...Sxc5!
    • 1.Qxg3?
      • threat
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe3#
      • 1...Kxc5
        • 2.Bxa7#
      • 1...Sxc5
        • 2.Sb5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...d5
        • 2.Sxe6#
        • 2.Qe3#
      • 1...Qxc5!
    • 1.Qxb4+?
      • 1...Sc4
        • 2.Sb5#
      • 1...Rxb4!
    • 1.Qxa1+?
      • 1...Kxc5
        • 2.Bxa7#
      • 1...Rxa1!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qg1#
      • 1...Kxc5
        • 2.Bxa7#
      • 1...Qxc5
        • 2.Sf3#
      • 1...Sxc5
        • 2.Sb5#
      • 1...Sc4
        • 2.Sb3#
      • 1...d5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(e);OGATEB,S_FLIGHT,XR(G)::B(J),XQ(h)
    • S(i);SBLOCK,XR(G)::S(I)
    • P(b);N_GUARD::QAB(A)
    • P(j);N_GUARD::S(I),XP(g)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(G)::B(J),XQ(h)
        • S(i);SBLOCK,XR(G)::S(I)
        • S(f);N_GUARD::R1(G),XS(f)
      • Refutation
        • Q(h);XR(G)
    • Try
      • S(B);
      • Threat
        • QAB(A)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(G)::B(J),XQ(h)
        • Q(h);SBLOCK,XR(G)::S(B)
        • S(i);SBLOCK,XR(G)::S(I)
        • P(b);N_GUARD,XS(B)::QAB(A)
        • P(j);N_GUARD::S(I),XP(g)
      • Refutation
        • S(f);
    • Try
      • B(J);XQ(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(j);::B(J)+R(G),DCHECK,XP(j)
      • Refutation
        • S(i);P_SPINS(i),XR(G)
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(G)::B(J),XQ(h)
        • S(i);SBLOCK,XR(G)::S(I)
        • S(f);N_GUARD::R1(G),XS(f)
      • Refutation
        • Q(h);XR(G)
    • Try
      • Q(A);CHECK,XP(d)
      • Vars
        • S(f);P_SPINS(f)::S(I)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);CHECK,XB(a)
      • Vars
        • K(e);S_FLIGHT,XR(G)::B(J),XQ(h)
      • Refutation
        • R(c);XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAB(A)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(G)::B(J),XQ(h)
      • Q(h);SBLOCK,XR(G)::S(B)
      • S(i);SBLOCK,XR(G)::S(I)
      • S(f);N_GUARD::S(B)
      • P(j);N_GUARD::S(I),XP(g)
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