MESON Chess Problem Database

Problem Display
PID: 92171 (8/qQn1KB2/PrR1nB2/1PPkPp2/5p2/2pP4/bPN2N2/6b1 w - - 0 1)

Zabirokhin, Piotr

Poesie des Schachs, 2006

8/qQn1KB2/PrR1nB2/1PPkPp2/5p2/2pP4/bPN2N2/6b1

#2

13 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Qxc6#
    • 1...Sxb5
      • 2.Bxe6#
    • 1...Sxa6
      • 2.Bxe6#
    • 1...Sa8
      • 2.Bxe6#
    • 1...Se8
      • 2.Bxe6#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sxc3#
        • 2.Rd6#
      • 1...Bxc5+
        • 2.Rxc5#
        • 2.Rd6#
      • 1...Qxb7
        • 2.Sxc3#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxb5
        • 2.Bxe6#
        • 2.Rd6#
      • 1...cxb2
        • 2.Sc3#
        • 2.Rd6#
      • 1...Bd4
        • 2.Sb4#
        • 2.Rd6#
      • 1...fxe4!
    • 1.Bh5?
      • threat
        • 2.Bf3#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxc5
        • 2.Rd6#
      • 1...Sd4
        • 2.Sb4#
      • 1...f3
        • 2.Bxf3#
      • 1...Sg5!
    • 1.Rxb6+?
      • 1...Kxc5
        • 2.Qc6#
        • 2.b4#
      • 1...Qxb7!
    • 1.Rxc7+?
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rxb7
        • 2.Bxe6#
      • 1...Qxb7!
    • 1.bxc3?
      • threat
        • 2.Sb4#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxa6
        • 2.Bxe6#
      • 1...Rxb5!
    • 1.b4?
      • threat
        • 2.Rd6#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Qxb7!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sxc3#
      • 1...Bxc5+
        • 2.Rd6#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxb5
        • 2.Bxe6#
      • 1...cxb2
        • 2.Sc3#
      • 1...Bd4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
    • S(j);N_GUARD,P_PINQ(K),XP(E)::B(M),XS(h)
    • S(j);N_GUARD,P_PINQ(K),XP(H)::B(M),XS(h)
    • S(j);N_GUARD,P_PINQ(K)::B(M),XS(h)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);XQ(K)::S(C),XP(c)
        • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
      • Refutation
        • P(f);XS(C)
    • Try
      • B(M);N_PINS(h)
      • Threat
        • B(M)
      • Vars
        • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
        • S(h);SBLOCK,XP(F)::QAB(K)+R(I),DCHECK
        • S(h);SBLOCK::S(B)
        • P(d);::B(M),XP(d)
      • Refutation
        • S(h);
    • Try
      • R(I);CHECK,XR(g)
      • Refutation
        • Q(i);XQ(K)
    • Try
      • R(I);CHECK,XS(j)
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(K),XR(g)
        • R(g);P_PINR(I),XQ(K)::B(M),XS(h)
      • Refutation
        • Q(i);P_PINR(I),XQ(K)
    • Try
      • P(A);XP(c)
      • Threat
        • S(B)
      • Vars
        • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
        • S(j);N_GUARD,P_PINQ(K),XP(H)::B(M),XS(h)
      • Refutation
        • R(g);XP(E)
    • Try
      • P(A);
      • Threat
        • QAB(K)+R(I),DCHECK
      • Vars
        • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
      • Refutation
        • Q(i);XQ(K)
  • Actual
    • S(C);
    • Threat
      • S(C),XP(c)
    • Vars
      • B(a);CHECK,SBLOCK,XP(F)::QAB(K)+R(I),DCHECK
      • R(g);OGATE,P_SPINR(g),XR(I)::QAB1(K),XR(g)
      • S(j);N_GUARD,P_PINQ(K),XP(E)::B(M),XS(h)
      • P(c);XP(A)::S(C)
      • B(a);SBLOCK::S(B)
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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).