MESON Chess Problem Database

Problem Display
PID: 40616 (8/6b1/4N2p/2RPp3/pQ1qk2N/P3P3/2K1P3/1BB5 w - - 0 1)

Lindner, Laszlo

Budapest Spring Festival, 1987

8/6b1/4N2p/2RPp3/pQ1qk2N/P3P3/2K1P3/1BB5

#2

11 + 6

4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4+
      • 2.Kd1#
      • 2.Kb2#
      • 2.Kd2#
      • 2.Qxc4#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Qc4+
        • 2.Kd1#
        • 2.Kb2#
        • 2.Kd2#
      • 1...Bf8
        • 2.Sg3#
      • 1...Kxf5!
    • 1.Bd2?
      • threat
        • 2.Kc1#
        • 2.Kd1#
      • 1...Qc4+
        • 2.Kd1#
        • 2.Kb2#
        • 2.Qxc4#
      • 1...Qxb4!
    • 1.Qxa4?
      • threat
        • 2.Kb3#
      • 1...Qc4+
        • 2.Kd1#
        • 2.Kb2#
        • 2.Kd2#
        • 2.Qxc4#
      • 1...Qb4
        • 2.Kd1#
        • 2.Qxb4#
      • 1...Qxa4+!
  • Keys
    • 1.Qb7!
      • 1...Qb2+
        • 2.Kxb2#
      • 1...Qc3+
        • 2.Kxc3#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Qd1+
        • 2.Kxd1#
      • 1...Qd2+
        • 2.Kxd2#
      • 1...Qd3+
        • 2.exd3#
      • 1...Qc4+
        • 2.Rxc4#
      • 1...Qxe3
        • 2.d6#
      • 1...Qxd5
        • 2.Kb2#
        • 2.Kc3#
        • 2.Rc4#
        • 2.Qxd5#
      • 1...Bf6
        • 2.Qh7#
      • 1...Qa1
        • 2.d6#
      • 1...Qb4
        • 2.Qxb4#
      • 1...Bf8
        • 2.Qh7#
      • 1...Bh8
        • 2.Qh7#
      • 1...h5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::S(K)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::S(H)
      • Refutation
        • K(c);N_SPINQ(b),S_FLIGHT,XS(H)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(G)
    • Try
      • Q(G);XP(a)
      • Threat
        • B(A)+K(C)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XQ(G)
  • Actual
    • Q(G);N_PINQ(b)
    • Vars
      • Q(b);CHECK::B(A)+K(C),XQ(b)
      • Q(b);CHECK,XR(I)::S(K),XQ(b)
      • Q(b);CHECK,OGATE::P(D),XQ(b)
      • Q(b);CHECK,OGATEB::R(I),XQ(b)
      • Q(b);N_GUARD,XP(F)::QAB(G)+P(J)
      • B(f);OGATE::QAB(G)
      • Q(b);N_GUARD::QAB(G)+P(J)
      • Q(b);OGATEB::QAR(G),XQ(b)
      • P(e);N_GUARD::S(K)
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