MESON Chess Problem Database
Problem Display
PID: 238605 (b1BR3b/2p4q/p1kNNR2/K2p4/3P4/p7/2n4Q/5r1r w - - 0 1)
Shanshin, Valery Yurevich
Problemist Ukraini, 2009
#2
8 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Bd7#
- 1...Qe4
- 2.Bd7#
- 1...Qf5
- 2.Bd7#
- 1...Qg6
- 2.Bd7#
- 1...Qg8
- 2.Bd7#
- 2.Qxc2#
- 1...Qh3
- 2.Bd7#
- 1...Qh4
- 2.Bd7#
- 2.Qxc2#
- 1...Qh5
- 2.Bd7#
- 2.Qxc2#
- 1...Qh6
- 2.Bd7#
- 2.Qxc2#
- 1...Qd7
- 2.Bxd7#
- 1...Qe7
- 2.Qxc2#
- 1...Qf7
- 2.Qxc2#
- 1...Qg7
- 2.Qxc2#
- 1...Rf5
- 2.Qxc2#
- 1...Bb7
- 2.Bxb7#
- 1...Bg7
- 2.Bd7#
- 1...cxd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Qd3
- Tries
- 1.Sf7?
- threat
- 2.Se5#
- 2.Qxc7#
- 1...Qxf7
- 2.Qxc2#
- 1...Rxh2
- 2.Se5#
- 1...Bxf6
- 2.Qxc7#
- 1...Qe4
- 2.Qxc7#
- 1...Qf5
- 2.Qxc7#
- 1...Qh5
- 2.Qxc7#
- 2.Qxc2#
- 1...Re1
- 2.Qxc7#
- 1...Rf4
- 2.Se5#
- 1...Rf5
- 2.Qxc7#
- 2.Qxc2#
- 1...Qxh2!
- threat
- 1.Sg7?
- threat
- 2.Sdf5#
- 2.Bd7#
- 1...Qxh2
- 2.Bd7#
- 1...Qxg7
- 2.Qxc2#
- 1...Rxf6
- 2.Bd7#
- 1...Bxg7
- 2.Bd7#
- 1...cxd6
- 2.Qxd6#
- 1...Qe4
- 2.Bd7#
- 1...Qf5
- 2.Sdxf5#
- 1...Qg6
- 2.Bd7#
- 1...Qg8
- 2.Bd7#
- 2.Qxc2#
- 1...Qh3
- 2.Sdf5#
- 1...Qh4
- 2.Bd7#
- 2.Qxc2#
- 1...Qh6
- 2.Bd7#
- 2.Qxc2#
- 1...Re1
- 2.Se4#
- 2.Bd7#
- 1...Rf5
- 2.Sdxf5#
- 2.Bd7#
- 2.Qxc2#
- 1...Sxd4!
- threat
- 1.Qxh7?
- threat
- 2.Qxc2#
- 2.Qxc7#
- 2.Qd7#
- 1...Sxd4
- 2.Qxc7#
- 2.Qd7#
- 1...cxd6
- 2.Qxc2#
- 2.Qc7#
- 2.Qd7#
- 1...Rc1
- 2.Qxc7#
- 2.Qd7#
- 1...Rf2
- 2.Qxc7#
- 2.Qd7#
- 1...Rf3
- 2.Qxc7#
- 2.Qd7#
- 1...Rf5
- 2.Qxc7#
- 2.Qd7#
- 1...Rh2
- 2.Qxc7#
- 2.Qd7#
- 1...Rh3
- 2.Qxc7#
- 2.Qd7#
- 1...Bg7
- 2.Qxc2#
- 1...Sa1
- 2.Qxc7#
- 2.Qd7#
- 1...Se1
- 2.Qxc7#
- 2.Qd7#
- 1...Se3
- 2.Qxc7#
- 2.Qd7#
- 1...Sb4
- 2.Qxc7#
- 2.Qd7#
- 1...Rxh7!
- threat
- 1.Sf7?
- Keys
- 1.Sf5!
- threat
- 2.Seg7#
- 2.Qxc2#
- 1...Qxf5
- 2.Qxc7#
- 1...Qxh2
- 2.Se7#
- 1...Rxf5
- 2.Qxc2#
- 1...Rxh2
- 2.Seg7#
- 1...Bxf6
- 2.Qxc2#
- 1...Sxd4
- 2.Sfxd4#
- 1...Qg6
- 2.Se7#
- 2.Qxc7#
- 2.Qxc2#
- 1...Qg8
- 2.Se7#
- 2.Qxc7#
- 2.Qxc2#
- 1...Qh3
- 2.Se7#
- 2.Seg7#
- 2.Qxc7#
- 1...Qh4
- 2.Se7#
- 2.Qxc7#
- 2.Qxc2#
- 1...Qh6
- 2.Se7#
- 2.Qxc7#
- 2.Qxc2#
- 1...Qd7
- 2.Qxc2#
- 1...Qe7
- 2.Sxe7#
- 1...Qf7
- 2.Qxc2#
- 1...Qg7
- 2.Sexg7#
- 2.Qxc2#
- 1...Rc1
- 2.Seg7#
- 1...Re1
- 2.Qxc2#
- 1...Rf2
- 2.Seg7#
- 1...Rf3
- 2.Seg7#
- 1...Bg7
- 2.Se7#
- 2.Sexg7#
- 2.Qxc7#
- 2.Qxc2#
- 1...Sa1
- 2.Seg7#
- 1...Se1
- 2.Seg7#
- 1...Se3
- 2.Seg7#
- 1...Sb4
- 2.Seg7#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 12
- REMOVED MATES = 7
- Sets
- Q(i);N_GUARD::B(G)
- Q(i);N_GUARD::B(G),XQ(i)
- Q(i);N_GUARD::QAR(A),XS(c)
- R(a);S_CUTQ(i)::QAR(A),XS(c)
- B(j);N_GUARD::B(G),XB(j)
- B(k);S_CUTQ(i)::B(G)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XS(D)::QAR(A),XS(c)
- R(b);XQ(A)::S(D)
- B(k);XR(F)::QAR1(A),XP(h)
- Q(i);::QAR1(A),XP(h)
- R(a);::QAR1(A),XP(h)
- R(a);::S(D)
- Refutation
- Q(i);XQ(A)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);XQ(A)::B(G)
- Q(i);N_GUARD,XS(E)::QAR(A),XS(c)
- R(a);XR(F)::B(G)
- B(k);XS(E)::B(G)
- P(h);OGATE,P_SPINP(h),XS(D)::QAR1(A),XP(h)
- Q(i);::B(G)
- Q(i);::R(F)+S(D),XQ(i)
- Q(i);::R(F)+S(D)
- Refutation
- S(c);XP(B)
- Try
- Q(A);XQ(i)
- Threat
- DUALS(3)
- Vars
- B(k);::QAR(A),XS(c)
- Refutation
- R(b);XQ(A)
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XS(D)::QAR1(A),XP(h)
- Q(i);N_GUARD,XQ(A)::S(D)
- R(a);XS(D)::QAR(A),XS(c)
- R(b);XQ(A)::R(F)+S(E)
- B(k);XR(F)::QAR(A),XS(c)
- S(c);XP(B)::S(D),XS(c)
- Q(i);::QAR(A),XS(c)
- Q(i);N_GUARD::S(D),XQ(i)
- R(a);::R(F)+S(E)
- R(a);::QAR(A),XS(c)
- S(c);::R(F)+S(E)
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).