MESON Chess Problem Database

Problem Display
PID: 7835 (3bR3/2Npnp1p/pQ3N1P/P2Pk1p1/2p3P1/4P3/1p1P4/1K6 w - - 0 1)

Lender, Baruch

3rd Comm., Israel Ring Ty., 1994

3bR3/2Npnp1p/pQ3N1P/P2Pk1p1/2p3P1/4P3/1p1P4/1K6

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc7
      • 2.Rxe7#
    • 1...c3
      • 2.d4#
    • 1...d6
      • 2.Qd4#
  • Tries
    • 1.Kxb2?
      • 1...Bxc7
        • 2.Rxe7#
      • 1...d6
        • 2.Qd4#
      • 1...c3+!
    • 1.Sxa6?
      • 1...d6
        • 2.Qd4#
      • 1...Bc7
        • 2.Rxe7#
      • 1...c3
        • 2.d4#
      • 1...Bxb6!
    • 1.Sa8?
      • 1...d6
        • 2.Qd4#
      • 1...Bc7
        • 2.Rxe7#
      • 1...c3
        • 2.d4#
      • 1...Bxb6!
    • 1.Qc5?
      • 1...Kxf6
        • 2.Qd6#
      • 1...Bxc7
        • 2.Qxe7#
      • 1...d6
        • 2.Qd4#
      • 1...c3!
    • 1.Qxa6?
      • 1...Bxc7
        • 2.Rxe7#
      • 1...c3
        • 2.d4#
      • 1...d6!
    • 1.d3?
      • threat
        • 2.Sxd7#
        • 2.d4#
      • 1...Bxc7
        • 2.Rxe7#
        • 2.d4#
      • 1...d6
        • 2.Sd7#
        • 2.Qd4#
      • 1...cxd3!
  • Keys
    • 1.Qb4!
      • 1...Kxf6
        • 2.Qd6#
      • 1...Bxc7
        • 2.Qxe7#
      • 1...c3
        • 2.Sxd7#
      • 1...d6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(j);N_GUARD,XS(J)::R(K),XS(g)
    • P(b);N_GUARD::P(B)
    • P(f);SBLOCK::QAB1(G)
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Vars
        • B(j);N_GUARD,XS(J)::R(K),XS(g)
        • P(f);SBLOCK::QAB1(G)
      • Refutation
        • P(b);CHECK
    • Try
      • S(J);XP(e)
      • Vars
        • P(f);SBLOCK::QAB1(G)
        • B(j);N_GUARD::R(K),XS(g)
        • P(b);N_GUARD::P(B)
      • Refutation
        • B(j);XQ(G)
    • Try
      • S(J);
      • Vars
        • P(f);SBLOCK::QAB1(G)
        • B(j);N_GUARD::R(K),XS(g)
        • P(b);N_GUARD::P(B)
      • Refutation
        • B(j);XQ(G)
    • Try
      • Q(G);
      • Vars
        • K(c);N_SPINS(g),S_FLIGHT,XS(H)::QAR2(G)
        • B(j);N_GUARD,XS(J)::QAR2(G),XS(g)
        • P(f);SBLOCK::QAB1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);XP(e)
      • Vars
        • B(j);N_GUARD,XS(J)::R(K),XS(g)
        • P(b);N_GUARD::P(B)
      • Refutation
        • P(f);
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);XP(B)
  • Actual
    • Q(G);
    • Vars
      • K(c);N_SPINS(g),S_FLIGHT,XS(H)::QAR2(G)
      • B(j);N_GUARD,XS(J)::QAR2(G),XS(g)
      • P(b);::S(H),XP(f)
      • P(f);SBLOCK::QAB(G)
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