MESON Chess Problem Database

Problem Display
PID: 176086 (4b2Q/1p6/2P2Rp1/p3K1p1/rR4P1/1PkNP1pq/1N1p3P/B2B4 w - - 0 1)

Reinartz, Otto

Schach-Echo, 1936

4b2Q/1p6/2P2Rp1/p3K1p1/rR4P1/1PkNP1pq/1N1p3P/B2B4

#2

13 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Rc4#
    • 1...Ra2
      • 2.Rc4#
    • 1...Ra3
      • 2.Rc4#
  • Tries
    • 1.Sc4+?
      • 1...Kxd3
        • 2.Rd6#
      • 1...Rxa1!
    • 1.Rd4?
      • threat
        • 2.Sxa4#
      • 1...Rxa1
        • 2.Rc4#
      • 1...Ra2
        • 2.Sa4#
        • 2.Rc4#
      • 1...Ra3
        • 2.Sa4#
        • 2.Rc4#
      • 1...Rb4
        • 2.Sa4#
        • 2.Sc4#
      • 1...Rc4
        • 2.Sa4#
        • 2.Sxc4#
        • 2.Rxc4#
      • 1...Rxd4!
    • 1.Rd6?
      • threat
        • 2.Sxa4#
      • 1...Rxa1
        • 2.Rc4#
      • 1...Rxb4
        • 2.Sa4#
        • 2.Sc4#
      • 1...Ra2
        • 2.Sa4#
        • 2.Rc4#
      • 1...Ra3
        • 2.Sa4#
        • 2.Rc4#
      • 1...Qxh8+!
  • Keys
    • 1.Ke4!
      • threat
        • 2.Sxa4#
      • 1...Qg2+
        • 2.Rf3#
      • 1...Qxg4+
        • 2.Rf4#
      • 1...Rxb4+
        • 2.Sc4#
      • 1...Bxc6+
        • 2.Rxc6#
      • 1...Rxa1
        • 2.Rc4#
      • 1...Ra2
        • 2.Sa4#
        • 2.Rc4#
      • 1...Ra3
        • 2.Sa4#
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD,XB(A)::R1(H)
    • R(e);N_GUARD::R1(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(F)::R(L)
      • Refutation
        • R(e);XB(A)
    • Try
      • R(H);
      • Threat
        • B(A)+S(C),DCHECK,XR(e)
      • Vars
        • R(e);N_GUARD,XB(A)::R1(H)
      • Refutation
        • R(e);XR(H)
    • Try
      • R(L);
      • Threat
        • B(A)+S(C),DCHECK,XR(e)
      • Vars
        • R(e);N_GUARD,XB(A)::R1(H)
      • Refutation
        • Q(d);CHECK,XQ(M)
  • Actual
    • K(J);P-FLIGHT,P_SPINR(H)
    • Threat
      • B(A)+S(C),DCHECK,XR(e)
    • Vars
      • Q(d);CHECK,N_GUARD::QAB(M)+R(L)
      • Q(d);CHECK,N_GUARD,XP(I)::QAB(M)+R(L)
      • R(e);CHECK,N_GUARD,XR(H)::B(A)+S(C)
      • B(j);CHECK,OGATE,XP(K)::QAB(M)+R(L),DCHECK,XB(j)
      • R(e);N_GUARD,N_PINR(H),XB(A)::R1(H)
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).