MESON Chess Problem Database
Problem Display
PID: 50540 (q7/1P6/3R1p2/2PNk3/3p4/pP3Q2/K2P1prb/8 w - - 0 1)
Heinonen, Unto
Vaisanen, Kauko
1st Prize, Suomen Tehtavaniekat, 1998-1999
#2
8 + 8
| 145 | StrateGems | 2003 |
| 56 | The Problemist | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Rg3
- 2.Qf4#
- 1...Bg1
- 2.Qf4#
- 1...Bf4
- 2.Qxf4#
- 1...f5
- 2.Qe2#
- 1...Rg3
- Tries
- 1.Sc3?
- threat
- 2.Qe4#
- 2.Qxf6#
- 1...Qxb7
- 2.Qxf6#
- 1...dxc3
- 2.d4#
- 1...Bf4
- 2.Qe4#
- 2.Qd5#
- 1...f1Q
- 2.Qe4#
- 1...f1R
- 2.Qe4#
- 1...Qd8
- 2.Qe4#
- 1...Qf8
- 2.Qe4#
- 1...Qh8
- 2.Qe4#
- 1...Rg4
- 2.Qxf6#
- 1...Rg6
- 2.Qe4#
- 1...f5!
- threat
- 1.Se3?
- threat
- 2.Sc4#
- 2.Qf5#
- 1...dxe3
- 2.d4#
- 1...f1B
- 2.Qf5#
- 1...f1R
- 2.Sc4#
- 1...Qa4
- 2.Qf5#
- 1...Qa6
- 2.Qf5#
- 1...Qc8
- 2.Sc4#
- 1...Qg8
- 2.Qf5#
- 1...Rg5
- 2.Sc4#
- 1...Bf4
- 2.Qd5#
- 1...f5
- 2.Sc4#
- 2.Qxf5#
- 1...f1Q!
- threat
- 1.Sb4?
- threat
- 2.Sd3#
- 2.Sc6#
- 1...Qxb7
- 2.Sd3#
- 1...Bf4
- 2.Qd5#
- 1...f1Q
- 2.Sc6#
- 1...f1B
- 2.Sc6#
- 1...Qa4
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 1...Qe8
- 2.Sd3#
- 1...d3
- 2.Sxd3#
- 2.Sc6#
- 1...Qa6!
- threat
- 1.Sb6?
- threat
- 2.Sc4#
- 2.Sd7#
- 1...Qxb7
- 2.Sc4#
- 1...Bf4
- 2.Qd5#
- 1...f1Q
- 2.Sd7#
- 1...f1B
- 2.Sd7#
- 1...Qa6
- 2.Sd7#
- 1...Qc8
- 2.Sc4#
- 1...Qd8
- 2.Sc4#
- 1...Qe8
- 2.Sc4#
- 1...Qg8
- 2.Sd7#
- 1...Rg7
- 2.Sc4#
- 1...Qa4!
- threat
- 1.Sxf6?
- threat
- 2.Sd7#
- 2.Qe4#
- 1...Bf4
- 2.Qe4#
- 2.Qd5#
- 1...Qa4
- 2.Qe4#
- 1...Qc8
- 2.Qe4#
- 1...Qd8
- 2.Qe4#
- 1...Qe8
- 2.Qe4#
- 1...Rg4
- 2.Sxg4#
- 2.Sd7#
- 1...Rg7
- 2.Qe4#
- 1...Qxb7!
- threat
- 1.Sc7?
- threat
- 2.Rd5#
- 2.Re6#
- 1...Qxb7
- 2.Re6#
- 1...Bf4
- 2.Rd5#
- 2.Qd5#
- 1...Qa6
- 2.Rd5#
- 1...Qc8
- 2.Rd5#
- 1...Qd8
- 2.Re6#
- 1...Qe8
- 2.Rd5#
- 1...d3
- 2.Rd5#
- 1...f5
- 2.Re6#
- 1...Qg8!
- threat
- 1.Se7?
- threat
- 2.Sc6#
- 2.Qf5#
- 1...Qxb7
- 2.Qf5#
- 1...f1Q
- 2.Sc6#
- 1...f1R
- 2.Sc6#
- 1...Qa4
- 2.Qf5#
- 1...Qa6
- 2.Qf5#
- 1...Qe8
- 2.Qf5#
- 1...Rg5
- 2.Sc6#
- 1...Bf4
- 2.Qd5#
- 1...f5
- 2.Sc6#
- 2.Qxf5#
- 1...Qc8!
- threat
- 1.Sc3?
- Keys
- 1.Sf4!
- threat
- 2.Sd3#
- 2.Rd5#
- 1...Kf5
- 2.Rd5#
- 1...Qxb7
- 2.Sd3#
- 1...Bxf4
- 2.Qd5#
- 1...f1Q
- 2.Rd5#
- 1...f1B
- 2.Rd5#
- 1...Qa6
- 2.Rd5#
- 1...Qd8
- 2.Sd3#
- 1...Qg8
- 2.Sd3#
- 1...d3
- 2.Sxd3#
- 2.Rd5#
- 1...f5
- 2.Sd3#
- 2.Re6#
- threat
- 1.Sf4!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 3
- Sets
- R(b);S_CUTB(c)::QAB1(D)
- B(c);N_GUARD::QAB1(D)
- B(c);N_GUARD::QAB1(D),XB(c)
- P(g);SBLOCK::QAR(D)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::QAB1(D),XP(g)
- P(e);OGATE,XS(F)::P(B)
- P(a);P_PINP(B)::QAR1(D)
- Q(h);::QAR1(D)
- R(b);::QAB1(D),XP(g)
- R(b);::QAR1(D)
- Refutation
- P(g);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XS(F)::P(B)
- P(a);P_PINP(B)::QAR1(D)
- P(a);P_PINP(B)::S(F)
- Q(h);::QAR1(D)
- Q(h);::S(F)
- Q(h);P_PINP(C)::QAR1(D)
- R(b);::S(F)
- B(c);SBLOCK::QAR1(D)
- Refutation
- P(a);P_PINP(B)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::S(F)
- B(c);SBLOCK::QAR1(D)
- P(a);P_PINP(B)::S(F)
- Q(h);::S(F)
- Refutation
- Q(h);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::S(F)
- B(c);SBLOCK::QAR1(D)
- P(a);P_PINP(B)::S(F)
- Q(h);::S(F)
- Q(h);P_PINP(C)::S(F)
- R(b);::S(F)
- Refutation
- Q(h);
- Try
- S(F);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(h);::QAR1(D)
- R(b);::QAR1(D)
- Refutation
- Q(h);XP(H)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::R1(G)
- Q(h);::R1(G)
- P(e);::R1(G)
- P(g);::R1(G)
- Refutation
- Q(h);P_PINP(C)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(H)::QAR1(D)
- P(a);P_PINP(B)::S(F)
- Q(h);::QAR1(D)
- R(b);::S(F)
- B(c);SBLOCK::QAR1(D)
- Refutation
- Q(h);
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::R(G)
- Q(h);XP(H)::S(F)
- B(c);SBLOCK,XS(F)::QAR1(D)
- P(a);P_PINP(B)::R1(G)
- Q(h);::R1(G)
- Q(h);::S(F)
- Q(h);P_PINP(C)::S(F)
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).