MESON Chess Problem Database

Problem Display
PID: 174894 (2q1r3/5p2/3R4/2pPp3/2NkNp2/8/3K1PPp/2R1Q3 w - - 0 1)

Milewski, Stefan

Die Schwalbe, 2017

2q1r3/5p2/3R4/2pPp3/2NkNp2/8/3K1PPp/2R1Q3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.dxe6#
    • 1...Qc6
      • 2.dxc6#
    • 1...Re6
      • 2.dxe6#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sb5#
        • 2.Rc4#
      • 1...Qb7
        • 2.Rc4#
      • 1...Qd7
        • 2.Rc4#
      • 1...Qc6
        • 2.Rc4#
        • 2.dxc6#
      • 1...Qb8
        • 2.Rc4#
      • 1...c4
        • 2.Sc2#
        • 2.Sb5#
      • 1...Qa6!
    • 1.Sa5?
      • threat
        • 2.Sb3#
        • 2.Rc4#
      • 1...Qa6
        • 2.Sb3#
      • 1...Qh3
        • 2.Sc6#
        • 2.Rc4#
      • 1...Qb7
        • 2.Rc4#
      • 1...Qb8
        • 2.Sc6#
        • 2.Rc4#
      • 1...c4!
    • 1.Sc3?
      • threat
        • 2.Sb5#
        • 2.Qe4#
      • 1...Qa6
        • 2.Qe4#
      • 1...Qf5
        • 2.Sb5#
      • 1...Qb7
        • 2.Qe4#
      • 1...Qd7
        • 2.Qe4#
      • 1...Qc6
        • 2.Qe4#
      • 1...Qb8
        • 2.Qe4#
      • 1...e4
        • 2.Se2#
        • 2.Sb5#
      • 1...f5
        • 2.Sb5#
      • 1...Kxc4!
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...fxg3
        • 2.Qe3#
      • 1...Qf5
        • 2.Sxf5#
      • 1...e4
        • 2.Se2#
      • 1...f5!
    • 1.Sg5?
      • threat
        • 2.Sf3#
        • 2.Qe4#
      • 1...Qh3
        • 2.Qe4#
      • 1...Qg4
        • 2.Qe4#
      • 1...Qf5
        • 2.Sf3#
      • 1...f3
        • 2.Sxf3#
        • 2.Qe3#
        • 2.Qe4#
      • 1...f5
        • 2.Sf3#
      • 1...e4!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Qh3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...fxe3+
        • 2.Qxe3#
      • 1...Kxe4
        • 2.Rc4#
      • 1...Qa6
        • 2.Sf5#
      • 1...c4
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(g);OGATE::R(I)+P(H),XQ(g)
    • R(h);OGATE::R(I)+P(H),XR(h)
    • P(c);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::R1(A)
      • Refutation
        • Q(g);
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::S(F)
        • Q(g);::R1(A)
      • Refutation
        • P(d);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::QAR1(B)
        • Q(g);::S(G)
        • P(f);::S(G)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • S(G);
      • Threat
        • QAR1(B)
      • Vars
        • P(c);N_GUARD,XS(G)::QAB1(B)
        • Q(g);N_GUARD::S(G),XQ(g)
        • P(e);SBLOCK::S(G)
      • Refutation
        • P(f);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);::QAR1(B)
        • Q(g);::S(G)
        • P(f);::S(G)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,XS(G)::QAB1(B)
      • Refutation
        • Q(g);
  • Actual
    • S(F);
    • Threat
      • R1(A)
    • Vars
      • P(c);CHECK,OGATE,XS(F)::QAB1(B),XP(c)
      • K(b);P-FLIGHT,XS(G)::R(A)
      • Q(g);N_GUARD::S(F)
      • P(d);SBLOCK::S(F)
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