MESON Chess Problem Database

Problem Display
PID: 176088 (qB1N1r2/1PR1PR1p/1p2K3/3p1Bp1/4Pk2/4pNp1/1n3rP1/5Q2 w - - 0 1)

Reinartz, Otto

Schach-Echo, 1936

qB1N1r2/1PR1PR1p/1p2K3/3p1Bp1/4Pk2/4pNp1/1n3rP1/5Q2

#2

12 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb7
      • 2.Rxb7#
    • 1...Qa1
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rd7#
      • 2.Rc8#
    • 1...Qa2
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rd7#
      • 2.Rc8#
    • 1...Qa3
      • 2.Rc5#
    • 1...Qa4
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rd7#
      • 2.Rc8#
    • 1...Qa5
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rd7#
      • 2.Rc8#
    • 1...Qa6
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rd7#
      • 2.Rc8#
    • 1...Rc2
      • 2.Sd2#
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rxf3
      • 2.Qxf3#
    • 1...e2
      • 2.Qc1#
  • Tries
    • 1.Sg1?
      • threat
        • 2.Se2#
        • 2.Sh3#
      • 1...e2
        • 2.Qc1#
      • 1...Qa6
        • 2.Sh3#
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rd7#
        • 2.Rc8#
      • 1...g4!
    • 1.Sd4?
      • threat
        • 2.Se2#
      • 1...e2
        • 2.Qc1#
      • 1...Qa6
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rd7#
        • 2.Rc8#
      • 1...g4!
    • 1.Sxg5?
      • threat
        • 2.Sh3#
      • 1...e2
        • 2.Qc1#
      • 1...Kxg5!
    • 1.exd5?
      • threat
        • 2.Rc4#
      • 1...e2
        • 2.Qc1#
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Qxb8!
  • Keys
    • 1.Kxd5!
      • threat
        • 2.Se6#
      • 1...Qxb7+
        • 2.Rxb7#
      • 1...Qa2+
        • 2.Rc4#
      • 1...Qa5+
        • 2.Rc5#
      • 1...Rd2+
        • 2.Sxd2#
      • 1...Rxd8+
        • 2.Bd7#
      • 1...e2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(j);OGATE,XP(G)::B(K)+R(H),XQ(j)
    • Q(j);N_GUARD::B(K)+R(H)
    • R(b);::QAR(A)+S(C)
    • R(b);::QAR(A)+S(C),XR(b)
    • R(b);OGATE,P_SPINR(b),XS(C)::QAR1(A),XR(b)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • S(C);P_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(g);
    • Try
      • S(C);P_PINR(b)
      • Threat
        • S(C)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(g);
    • Try
      • S(C);P_PINR(b),XP(g)
      • Threat
        • S(C)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • K(e);N_SPINR(b),S_FLIGHT,XS(C)
    • Try
      • P(D);XP(f)
      • Threat
        • B(K)+R(H),DCHECK
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • Q(j);XB(K)
  • Actual
    • K(F);P_SPINP(G),S_FLIGHT,XP(f)
    • Threat
      • S(L)
    • Vars
      • Q(j);CHECK,OGATE,XP(G)::B(K)+R(H),XQ(j)
      • Q(j);CHECK,N_GUARD,N_PINP(G)::B(K)+R(H)
      • R(b);CHECK::QAR(A)+S(C),XR(b)
      • R(k);CHECK,N_GUARD,XS(L)::R(J)+B(E)
      • P(c);OGATEB::QAB(A)
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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).