MESON Chess Problem Database

Problem Display
PID: 233262 (6R1/2BQn1N1/K3Nq1n/5p2/p3k1b1/3pP3/3b1PP1/4R3 w - - 0 1)

Muller, Dieter

Freie Presse, 1975

6R1/2BQn1N1/K3Nq1n/5p2/p3k1b1/3pP3/3b1PP1/4R3

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sc5#
      • 2.Sg5#
    • 1...Qb2
      • 2.Sc5#
      • 2.Sg5#
    • 1...Qc3
      • 2.Sg5#
    • 1...Qd4
      • 2.Sg5#
      • 2.Qxd4#
    • 1...Qh4
      • 2.Sc5#
      • 2.Qd4#
    • 1...Qe5
      • 2.Sg5#
    • 1...Qg5
      • 2.Sc5#
      • 2.Sxg5#
      • 2.Qd4#
    • 1...Qxg7
      • 2.Sc5#
    • 1...Qxe6+
      • 2.Qxe6#
    • 1...Qg6
      • 2.Qd4#
    • 1...Qf7
      • 2.Sc5#
      • 2.Sg5#
      • 2.Qd4#
    • 1...Qf8
      • 2.Sc5#
      • 2.Sg5#
      • 2.Qd4#
    • 1...Bxe3
      • 2.Rxe3#
    • 1...Bh3
      • 2.f3#
    • 1...Sc6
      • 2.Sc5#
      • 2.Qxc6#
    • 1...Sg6
      • 2.Qc6#
    • 1...Sc8
      • 2.Qc6#
    • 1...Sxg8
      • 2.Qc6#
  • Tries
    • 1.Rd8?
      • threat
        • 2.Qxd3#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qc3
        • 2.Sg5#
      • 1...Qd4
        • 2.Sg5#
        • 2.Qxd4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Be2!
    • 1.Qxa4+?
      • 1...Kd5
        • 2.Rd8#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bb4!
    • 1.Qc6+?
      • 1...Sd5
        • 2.Sc5#
      • 1...Sxc6!
    • 1.Qd6?
      • threat
        • 2.Sc5#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Qc3
        • 2.Sg5#
      • 1...Qd4
        • 2.Sg5#
        • 2.Qxd4#
      • 1...Qe5
        • 2.Sg5#
        • 2.Qxe5#
      • 1...Bb4!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sg3#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Kxf5
        • 2.e4#
      • 1...Qxf5
        • 2.Qd4#
      • 1...Bxf5
        • 2.f3#
      • 1...Shxf5
        • 2.Rxg4#
      • 1...Sexf5
        • 2.Qc6#
      • 1...Qh4
        • 2.Sc5#
      • 1...Qe5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_PINS(F)::S(F)
    • Q(g);N_PINS(F),XS(I)::S(F)
    • Q(g);CHECK,OGATE,XS(F)::QAR2(H),XQ(g)
    • Q(g);N_GUARD::QAR1(H)
    • B(a);OGATE,P_SPINB(a),XP(D)::R1(A),XB(a)
    • B(e);N_GUARD::P(B)
    • S(i);N_GUARD::QAB(H)
    • S(i);N_GUARD,XR(J)::QAB(H)
  • Tries
    • Try
      • R(J);
      • Threat
        • QAB1(H),XP(b)
      • Vars
        • Q(g);CHECK,OGATE,XS(F)::QAR2(H),XQ(g)
        • Q(g);N_PINS(F)::S(F)
        • S(i);N_GUARD::QAB1(H),XS(i)
      • Refutation
        • B(e);
    • Try
      • Q(H);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT::R(J)
        • Q(g);N_GUARD,N_PINS(F),P_SPINQ(g)::QAR1(H),XQ(g)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(H);CHECK,N_SPINS(F)
      • Vars
        • S(i);P_SPINS(i)::S(F)
      • Refutation
        • S(i);XQ(H)
    • Try
      • Q(H);N_SPINS(F)
      • Threat
        • S(F)
      • Vars
        • Q(g);OGATE,P_PINQ(H),XS(F)::QAR2(H),XQ(g)
        • Q(g);N_GUARD::S(F)
      • Refutation
        • B(a);
  • Actual
    • S(I);XP(f)
    • Threat
      • S(I)
    • Vars
      • Q(g);CHECK,OGATE,XS(F)::QAR2(H),XQ(g)
      • K(d);OGATE,S_FLIGHT,XS(I)::P(D)
      • Q(g);N_GUARD,N_PINS(F),SBLOCK,XS(I)::QAR1(H)
      • B(e);N_GUARD,SBLOCK,XS(I)::P(B)
      • S(h);N_GUARD,SBLOCK,XS(I)::R(J),XB(e)
      • S(i);N_GUARD,SBLOCK,XS(I)::QAB(H)
      • Q(g);N_PINS(F)::S(F)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).