MESON Chess Problem Database

Problem Display
PID: 94591 (8/1pQ5/1p4R1/Rn1k1Pp1/br2N1P1/prpN3B/PpP5/1K6 w - - 0 1)

Knuppert, Hugo

Magasinet, 1952

8/1pQ5/1p4R1/Rn1k1Pp1/br2N1P1/prpN3B/PpP5/1K6

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qe5#
    • 1...Rd4
      • 2.Sf6#
    • 1...Rxe4
      • 2.Rd6#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qd8#
        • 2.Qd7#
      • 1...Kd4
        • 2.Qe5#
      • 1...bxa5
        • 2.Qe5#
        • 2.Qc5#
      • 1...Re4
        • 2.Rd6#
        • 2.Qd6#
        • 2.Qd8#
        • 2.Qd7#
      • 1...cxd2!
    • 1.Sef2?
      • threat
        • 2.Rd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Kd4!
    • 1.Sg3?
      • threat
        • 2.Rd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Kd4!
    • 1.Sxg5?
      • threat
        • 2.Rd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Kd4!
    • 1.Bg2?
      • threat
        • 2.Rd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Kd4!
    • 1.Re6?
      • 1...Rxe4
        • 2.Rd6#
      • 1...bxa5
        • 2.Qc5#
      • 1...Rc4
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qd8#
        • 2.Qd7#
      • 1...Rd4
        • 2.Sf6#
        • 2.Re5#
      • 1...Kd4!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxe4!
    • 1.Qd8+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxe4!
    • 1.Qc5+?
      • 1...Kxe4
        • 2.Bg2#
      • 1...bxc5!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxe4!
  • Keys
    • 1.Qxb6!
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe4
        • 2.Bg2#
      • 1...Rxe4
        • 2.Qc5#
      • 1...Rc4
        • 2.Sf6#
      • 1...Rd4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::QAR1(K)
    • R(f);SBLOCK::S(F)
    • R(f);SBLOCK,XS(F)::R1(J)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(5)
      • Vars
        • K(h);N_SPINS(g),P-FLIGHT::QAB1(K)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(F);
      • Threat
        • R1(J)
      • Vars
        • P(j);N_GUARD,N_SPINS(g),XR(H)::QAR1(K)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
    • Try
      • S(F);
      • Threat
        • R1(J)
      • Vars
        • P(j);N_GUARD,N_SPINS(g),XR(H)::QAR1(K)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
    • Try
      • S(F);XP(i)
      • Threat
        • R1(J)
      • Vars
        • P(j);N_GUARD,N_SPINS(g),XR(H)::QAR1(K)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
    • Try
      • B(E);
      • Threat
        • R1(J)
      • Vars
        • P(j);N_GUARD,N_SPINS(g),XR(H)::QAR1(K)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
    • Try
      • R(J);
      • Vars
        • R(f);SBLOCK,XS(F)::R1(J)
        • P(j);N_GUARD,N_SPINS(g),XR(H)::QAR1(K)
      • Refutation
        • K(h);N_SPINS(g),P-FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINS(g),S_FLIGHT::S(D)
      • Refutation
        • K(h);N_SPINS(g),S_FLIGHT,XS(F)
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINS(g),S_FLIGHT::S(D)
      • Refutation
        • K(h);N_SPINS(g),S_FLIGHT,XS(F)
    • Try
      • Q(K);CHECK,N_PINS(g)
      • Vars
        • K(h);S_FLIGHT,XS(F)::B(E)
      • Refutation
        • P(j);XQ(K)
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINS(g),S_FLIGHT::S(D)
      • Refutation
        • K(h);N_SPINS(g),S_FLIGHT,XS(F)
  • Actual
    • Q(K);XP(j)
    • Vars
      • K(h);N_SPINS(g),S_FLIGHT::QAR1(K)
      • K(h);N_SPINS(g),OGATEB,S_FLIGHT,XS(F)::B(E)
      • R(f);SBLOCK,XS(F)::QAR1(K)
      • R(f);SBLOCK::S(F)
      • R(f);SBLOCK::QAB1(K)
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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).