MESON Chess Problem Database

Problem Display
PID: 233428 (2B1R2K/4R3/5kPn/7P/5P2/4Pp2/3p1q2/b2b3Q w - - 0 1)

Kupper, Josef

Freie Presse, 2005

2B1R2K/4R3/5kPn/7P/5P2/4Pp2/3p1q2/b2b3Q

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3
      • 2.Qh4#
    • 1...Qh4
      • 2.Qxh4#
    • 1...Qf1
      • 2.Qh4#
    • 1...Qe2
      • 2.Qh4#
    • 1...Bc2
      • 2.Qxa1#
    • 1...Be2
      • 2.Qxa1#
    • 1...Bb3
      • 2.Qxa1#
    • 1...Ba4
      • 2.Qxa1#
    • 1...Sg4
      • 2.Rf7#
    • 1...Sf5
      • 2.Re6#
      • 2.Rf7#
    • 1...Sf7+
      • 2.Rxf7#
    • 1...Sg8
      • 2.Rf7#
  • Tries
    • 1.Bh3?
      • threat
        • 2.Re6#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Sg4
        • 2.Rf7#
      • 1...Bb3
        • 2.Qxa1#
      • 1...Qxe3!
    • 1.Rc7?
      • threat
        • 2.Rc6#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Qxe3
        • 2.Qh4#
      • 1...Bb3
        • 2.Qxa1#
      • 1...Ba4
        • 2.Qxa1#
      • 1...Sf5
        • 2.Rf7#
        • 2.Re6#
        • 2.Rf8#
      • 1...Be5!
    • 1.Rf8+?
      • 1...Sf7+
        • 2.Rexf7#
        • 2.Rfxf7#
      • 1...Kxe7+!
    • 1.Qh3?
      • threat
        • 2.Re6#
        • 2.Qe6#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Qxe3
        • 2.Qh4#
      • 1...Sg4
        • 2.Rf7#
      • 1...Sf5
        • 2.Re6#
        • 2.Rf7#
        • 2.Qxf5#
      • 1...Bb3!
    • 1.e4?
      • threat
        • 2.Re6#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Qb6
        • 2.Qh4#
      • 1...Bb3!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Re6#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Qxe3
        • 2.Qh4#
      • 1...Sxg4
        • 2.Rf7#
      • 1...Bb3
        • 2.Qxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(d);N_GUARD,XP(B)::QAB(A)
    • Q(d);N_GUARD::QAB(A),XQ(d)
    • Q(d);N_GUARD::QAB(A)
    • B(b);OGATE::QAB(A),XB(a)
    • S(g);N_GUARD::R1(F)
    • S(g);CHECK,N_GUARD::R1(F),XS(g)
  • Tries
    • Try
      • B(G);
      • Threat
        • R1(F)
      • Vars
        • S(g);CHECK,N_GUARD::R1(F),XS(g)
        • S(g);N_GUARD::R1(F)
        • B(b);OGATE::QAB(A),XB(a)
      • Refutation
        • Q(d);XP(B)
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • S(g);CHECK,N_GUARD::R1(F),XS(g)
        • Q(d);N_GUARD,XP(B)::QAB(A)
        • B(b);OGATE::QAB(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • R(H);CHECK
      • Refutation
        • K(f);CHECK,S_FLIGHT,XR(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);CHECK,N_GUARD::R1(F),XS(g)
        • Q(d);N_GUARD,XP(B)::QAB(A)
        • S(g);N_GUARD::R1(F)
      • Refutation
        • B(b);
    • Try
      • P(B);
      • Threat
        • R1(F)
      • Vars
        • S(g);CHECK,N_GUARD::R1(F),XS(g)
        • Q(d);N_GUARD::QAB(A)
      • Refutation
        • B(b);
  • Actual
    • B(G);
    • Threat
      • R1(F)
    • Vars
      • S(g);CHECK,N_GUARD::R1(F),XS(g)
      • Q(d);N_GUARD,XP(B)::QAB(A)
      • S(g);N_GUARD,XB(G)::R1(F)
      • B(b);OGATE::QAB(A),XB(a)
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