MESON Chess Problem Database
Problem Display
PID: 149875 (7B/1r4RB/2P1p3/1p1NRP2/1K1kN2n/p3pn2/1b2PPr1/2Q2bq1 w - - 0 1)
Gvozdjak, Peter
2nd Prize, HOW-75 JT, 2009-2010
#2
12 + 12
| 23 | Die Schwalbe | 2012 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qxa1#
- 1...Bc3+
- 2.Qxc3#
- 1...a2
- 2.Qxb2#
- 1...Ba1
- Tries
- 1.Sg3?
- threat
- 2.Rg4#
- 2.Qxe3#
- 1...Bc3+
- 2.Qxc3#
- 1...Kxe5
- 2.Rd7#
- 1...Qxf2
- 2.Rg4#
- 1...Rxg3
- 2.Qxe3#
- 1...Rxg7
- 2.Qxe3#
- 1...Bxe2
- 2.Qxe3#
- 1...Bxc1
- 2.Rg4#
- 1...Sxe5
- 2.Qc5#
- 1...Sxf5
- 2.Rg4#
- 1...exf2
- 2.Rg4#
- 2.Qe3#
- 2.Qf4#
- 1...exf5
- 2.Qxe3#
- 1...Sh2
- 2.Qxe3#
- 1...Sg5
- 2.Qxe3#
- 1...Sg6
- 2.Qxe3#
- 1...Sd2!
- threat
- 1.Rg4?
- threat
- 2.Sg3#
- 2.Qxe3#
- 2.Qc5#
- 1...Bc3+
- 2.Qxc3#
- 1...Qxf2
- 2.Sg3#
- 2.Qc5#
- 1...Rxg4
- 2.Qxe3#
- 2.Qc5#
- 1...Bxe2
- 2.Qxe3#
- 1...Bxc1
- 2.Sg3#
- 1...Sxe5
- 2.Qd1#
- 2.Qc5#
- 1...Sxf5
- 2.Sg3#
- 2.Qc5#
- 1...exf2
- 2.Sg3#
- 2.Qe3#
- 2.Qc5#
- 1...exf5
- 2.Qxe3#
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 1...Rg3
- 2.Sxg3#
- 2.Qxe3#
- 2.Qc5#
- 1...Sh2
- 2.Qxe3#
- 2.Qd1#
- 2.Qc5#
- 1...Sg5
- 2.Qxe3#
- 2.Qd1#
- 2.Qc5#
- 1...Sg6
- 2.Qxe3#
- 2.Qc5#
- 1...Rg7!
- threat
- 1.Rd7?
- threat
- 2.Sc7#
- 2.Qxe3#
- 2.Qc5#
- 1...Bc3+
- 2.Qxc3#
- 1...Qxf2
- 2.Sc7#
- 2.Qc5#
- 1...Rxd7
- 2.Qxe3#
- 2.Qc5#
- 1...Bxe2
- 2.Sc7#
- 2.Qxe3#
- 1...Bxc1
- 2.Sc7#
- 1...Sxe5
- 2.Qxe3#
- 1...Sxf5
- 2.Qc5#
- 1...exf2
- 2.Sc7#
- 2.Qe3#
- 2.Qc5#
- 1...exd5
- 2.Rdxd5#
- 2.Qxe3#
- 2.Qc5#
- 1...Sd2
- 2.Sc7#
- 2.Qc5#
- 1...Rc7
- 2.Sxc7#
- 2.Qxe3#
- 2.Qc5#
- 1...Rg7!
- threat
- 1.Sg3?
- Keys
- 1.Sc7!
- threat
- 2.Rd7#
- 2.Qc5#
- 1...Bc3+
- 2.Qxc3#
- 1...Kxe5
- 2.Rg4#
- 1...Rxg7
- 2.Qc5#
- 1...Rxc7
- 2.Qc5#
- 1...Bxe2
- 2.Rd7#
- 1...Bxc1
- 2.Rd7#
- 1...Sxe5
- 2.Qxe3#
- 1...Sxf5
- 2.Qc5#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- B(c);OGATEB::QAB(A),XB(c)
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- P(e);N_GUARD::QAB(A),XB(c)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- K(h);OGATEB,S_FLIGHT,XR(G)::B(L)+R(J)
- Q(b);XP(C)::R(J)
- R(d);XS(E)::QAB1(A),XP(f)
- R(l);XR(J)::QAB1(A),XP(f)
- B(a);XP(B)::QAB1(A),XP(f)
- B(c);XQ(A)::R(J)
- S(g);SBLOCK,XR(G)::QAB1(A)
- S(i);XP(H)::R(J)
- P(k);XP(H)::QAB1(A),XP(f)
- S(g);::QAB1(A),XP(f)
- S(i);::QAB1(A),XP(f)
- Refutation
- S(g);
- Try
- R(J);
- Threat
- DUALS(3)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- B(a);XP(B)::QAB1(A),XP(f)
- B(c);XQ(A)::R(J)+S(E)
- S(g);::QAB1(A)
- Refutation
- R(l);
- Try
- R(J);
- Threat
- DUALS(3)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- B(c);XQ(A)::R(J)+S(F)
- S(g);P_SPINS(g),XR(G)::QAB1(A),XP(f)
- S(i);XP(H)::QAB1(A)
- Refutation
- R(d);
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- K(h);OGATEB,S_FLIGHT,XR(G)::B(L)+R(J)
- R(d);XR(J)::QAB1(A)
- R(l);XS(F)::QAB1(A)
- B(a);XP(B)::R(J)
- B(c);XQ(A)::R(J)
- S(g);SBLOCK,XR(G)::QAB1(A),XP(f)
- S(i);XP(H)::QAB1(A)
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).