MESON Chess Problem Database

Problem Display
PID: 91956 (1B1R1n1Q/2r3N1/3N1P2/1Pp4R/2qk4/1B1p1K2/b2P4/8 w - - 0 1)

Lies, Heinz

Munchner Schachzeitung, 1938

1B1R1n1Q/2r3N1/3N1P2/1Pp4R/2qk4/1B1p1K2/b2P4/8

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb5
      • 2.Sxb5#
      • 2.Rd5#
    • 1...Qd5+
      • 2.Rxd5#
    • 1...Qc1
      • 2.Rd5#
    • 1...Qc2
      • 2.Rd5#
    • 1...Qc3
      • 2.Rd5#
    • 1...Qa4
      • 2.Rd5#
    • 1...Qb4
      • 2.Rd5#
    • 1...Rc6
      • 2.Sdf5#
    • 1...Ra7
      • 2.Sdf5#
    • 1...Rb7
      • 2.Sdf5#
    • 1...Re7
      • 2.Sdf5#
    • 1...Rf7
      • 2.Sdf5#
    • 1...Rxg7
      • 2.Sf5#
    • 1...Rc8
      • 2.Sdf5#
  • Tries
    • 1.Sxc4+?
      • 1...Sd7
        • 2.Se6#
      • 1...Rd7!
    • 1.Rh4+?
      • 1...Kd5
        • 2.Qh5#
      • 1...Ke5!
    • 1.Qh6?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Re7
        • 2.Sdf5#
      • 1...Se6
        • 2.Qe3#
      • 1...Sg6
        • 2.Qe3#
      • 1...Qe6!
  • Keys
    • 1.f7!
      • threat
        • 2.Se6#
        • 2.Sge8#
      • 1...Qd5+
        • 2.Rxd5#
      • 1...Qxf7+
        • 2.Sgf5#
      • 1...Rxf7+
        • 2.Sdf5#
      • 1...Qe6
        • 2.Sgf5#
        • 2.Sxe6#
      • 1...Re7
        • 2.Sdf5#
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sg6
        • 2.Se6#
      • 1...Sd7
        • 2.Se6#
      • 1...Sh7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 11
  • Sets
    • Q(c);CHECK,N_GUARD::R1(E),XQ(c)
    • Q(c);N_GUARD::R1(E)
    • R(f);::R(J)+S(F),DCHECK
    • R(f);P_PINP(G)::R(J)+S(F),DCHECK
    • R(f);XS(H)::R(J)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK,XQ(c)
      • Vars
        • S(g);P_SPINS(g)::S(H)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINQ(c)::QAR(K)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,N_GUARD::R1(E),XQ(c)
        • R(f);::R(J)+S(F),DCHECK
        • S(g);::QAB1(K)
      • Refutation
        • Q(c);
  • Actual
    • P(G);
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,N_GUARD::R1(E),XQ(c)
      • Q(c);CHECK,XP(G)::QAB(K)+S(H),DCHECK
      • R(f);CHECK,XP(G)::R(J)+S(F),DCHECK
      • S(g);::QAB(K)+S(H),DCHECK,XS(g)
      • S(g);::QAB(K)+S(H),DCHECK
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