MESON Chess Problem Database

Problem Display
PID: 52819 (3r4/p3Q1bq/K2n4/R1p2n1r/1k3pR1/7b/BP2N3/8 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2004

3r4/p3Q1bq/K2n4/R1p2n1r/1k3pR1/7b/BP2N3/8

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.bxc3#
    • 1...Sc4
      • 2.Qxc5#
    • 1...Se4
      • 2.Qb7#
    • 1...Sb7
      • 2.Qxb7#
    • 1...Sf7
      • 2.Qxc5#
      • 2.Qb7#
    • 1...Sc8
      • 2.Qxc5#
    • 1...Se8
      • 2.Qxc5#
      • 2.Qb7#
  • Tries
    • 1.Rb5+?
      • 1...Ka4
        • 2.Bb3#
      • 1...Sxb5!
    • 1.Qe3?
      • threat
        • 2.Qxc5#
        • 2.Qa3#
        • 2.Qb3#
      • 1...Bxb2
        • 2.Qxc5#
        • 2.Qb3#
      • 1...Qg8
        • 2.Qxc5#
        • 2.Qa3#
      • 1...Rc8
        • 2.Qa3#
        • 2.Qb3#
      • 1...Bc3
        • 2.Qxc5#
        • 2.Qxc3#
        • 2.bxc3#
      • 1...Bd4
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sg3
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sd4
        • 2.Qd2#
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sh4
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sh6
        • 2.Qa3#
        • 2.Qb3#
      • 1...Se7
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sc4
        • 2.Qxc5#
        • 2.Qb3#
      • 1...Se4
        • 2.Qa3#
        • 2.Qb3#
      • 1...Sb5
        • 2.Qb3#
      • 1...Sb7
        • 2.Qa3#
        • 2.Qb3#
      • 1...c4
        • 2.Qc5#
        • 2.Qa3#
      • 1...Sxe3!
    • 1.Qb7+?
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sxb7!
    • 1.Qd7?
      • threat
        • 2.Ra4#
        • 2.Qa4#
      • 1...Sb5
        • 2.Qxb5#
      • 1...c4
        • 2.Qa4#
      • 1...Rxd7!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sd3#
        • 2.Sd5#
      • 1...Bf1+
        • 2.Sd3#
      • 1...Bxb2
        • 2.Sd5#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sc4
        • 2.Qxc5#
      • 1...Se4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(i);OGATE::P(B),XB(i)
    • S(g);N_SPINP(c),OGATE,P_SPINP(d)::QAB1(G),XP(d)
    • S(g);N_GUARD,N_SPINP(c),P_SPINP(d)::QAR(G)
    • S(g);N_GUARD::QAR(G),XS(g)
    • S(g);OGATE::QAB1(G),XP(d)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • S(g);XR(E)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);::QAR1(G)
      • Refutation
        • S(e);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR1(G),XS(g)
      • Refutation
        • S(g);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD::QAR1(G),XS(g)
        • P(d);N_SPINP(c)::QAR1(G)
      • Refutation
        • R(k);XQ(G)
  • Actual
    • S(C);XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • B(a);CHECK::R(D)+S(C),DCHECK
      • B(i);XP(B)::R(D)+S(C),DCHECK
      • S(e);S_CUTB(i)::QAB(G)
      • S(g);OGATE,P_SPINP(d)::QAB1(G),XP(d)
      • S(g);N_GUARD,P_SPINP(d)::QAR(G)
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