MESON Chess Problem Database
Problem Display
PID: 153344 (5K2/4pB2/p1NbN3/Rq3kPp/2Q1n3/5p1P/8/B5R1 w - - 0 1)
van Gool, Johann Christoffel
4th HM., Wola Gulowska, 1989
#2
10 + 8
| 15345 | Wola Gulowska Award | 1989 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Scd4#
- 1...Bh2
- 2.Sxe7#
- 1...Bg3
- 2.Sxe7#
- 1...Bf4
- 2.Sxe7#
- 2.Sed4#
- 2.Sg7#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Sxe7#
- 1...Bc7
- 2.Sxe7#
- 1...Bb8
- 2.Sxe7#
- 1...Sd2
- 2.Sg7#
- 1...Sf2
- 2.Sg7#
- 1...Sc3
- 2.Sg7#
- 1...Sc5
- 2.Sg7#
- 1...Sxg5
- 2.Sg7#
- 2.Rxg5#
- 1...Sf6
- 2.Sg7#
- 1...Qe5
- Tries
- 1.Be5?
- threat
- 2.Sed4#
- 2.Sg7#
- 1...Qxc4
- 2.Sg7#
- 1...Qxe5
- 2.Scd4#
- 1...Bxe5
- 2.Sxe7#
- 1...Sxg5
- 2.Sg7#
- 2.Rxg5#
- 2.Qf4#
- 1...Qc5
- 2.Sg7#
- 1...Qb2
- 2.Sg7#
- 1...Qd5
- 2.Sg7#
- 1...Qb6
- 2.Sg7#
- 1...Bc5
- 2.Sg7#
- 1...Sd2
- 2.Sg7#
- 2.Qf4#
- 1...Sf2
- 2.Sg7#
- 2.Qf4#
- 1...Sc3
- 2.Sg7#
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sc5
- 2.Sg7#
- 2.Qf4#
- 1...Sf6
- 2.Sg7#
- 2.Qf4#
- 1...Qb8+!
- threat
- 1.Bh8?
- threat
- 2.Scd4#
- 1...Sxg5
- 2.Rxg5#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Sxe7#
- 1...Sd2
- 2.Sg7#
- 1...Sf2
- 2.Sg7#
- 1...Sc3
- 2.Sg7#
- 1...Sc5
- 2.Sg7#
- 1...Sf6
- 2.Sg7#
- 1...Sg3!
- threat
- 1.Rg4?
- threat
- 2.Sed4#
- 2.Sg7#
- 2.Qxe4#
- 1...Sxg5
- 2.Sg7#
- 2.Rxg5#
- 1...Bf4
- 2.Sxe7#
- 2.Sed4#
- 2.Sg7#
- 2.Rxf4#
- 1...Bc5
- 2.Sg7#
- 2.Rf4#
- 2.Qd5#
- 2.Qxe4#
- 1...Be5
- 2.Sxe7#
- 2.Qxe4#
- 1...Sd2
- 2.Sed4#
- 2.Sg7#
- 1...Sf2
- 2.Sed4#
- 2.Sg7#
- 1...Sc3
- 2.Sed4#
- 2.Sg7#
- 1...Sg3
- 2.Sed4#
- 2.Sg7#
- 1...Sc5
- 2.Sed4#
- 2.Sg7#
- 1...Sf6
- 2.Sed4#
- 2.Sg7#
- 1...hxg4!
- threat
- 1.Rxb5+?
- 1...Bc5
- 2.Sxe7#
- 2.Qd5#
- 1...Be5
- 2.Scd4#
- 2.Sxe7#
- 2.Rxe5#
- 1...Sc5
- 2.Sg7#
- 2.Qd3#
- 2.Qc2#
- 1...axb5!
- 1...Bc5
- 1.Qxb5+?
- 1...Bc5
- 2.Sxe7#
- 1...Be5
- 2.Scd4#
- 2.Sxe7#
- 2.Qxe5#
- 1...Sc5
- 2.Qd3#
- 2.Qb1#
- 1...axb5!
- 1...Bc5
- 1.Qd5+?
- 1...Be5
- 2.Scd4#
- 2.Sxe7#
- 1...Qxd5!
- 1...Be5
- 1.Be5?
- Keys
- 1.Re1!
- threat
- 2.Qxe4#
- 1...Sxg5
- 2.Sg7#
- 1...Sd2
- 2.Scd4#
- 1...Sf2
- 2.Scd4#
- 1...Sc3
- 2.Scd4#
- 1...Sg3
- 2.Scd4#
- 1...Sc5
- 2.Scd4#
- 1...Sf6
- 2.Scd4#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(c);::S(G)
- B(g);N_GUARD::S(G),XP(h)
- B(g);N_GUARD,N_SPINQ(c),S_CUTQ(c)::QAR2(D)
- B(g);N_GUARD,N_SPINQ(c)::S(G),XP(h)
- S(b);::S(H)
- S(b);N_SPINQ(c)::S(H)
- Tries
- Try
- B(A);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);XQ(D)::S(H)
- Q(c);P_SPINQ(c),XB(A)::S(G)
- B(g);N_GUARD,SBLOCK,XB(A)::S(G),XP(h)
- Q(c);::S(H)
- B(g);::S(H)
- S(b);OGATE::QAR1(D)
- Refutation
- Q(c);CHECK
- Try
- B(A);
- Threat
- S(G)
- Vars
- S(b);OGATE,XP(F)::R1(B),XS(b)
- B(g);N_GUARD,N_SPINQ(c),S_CUTQ(c)::QAR2(D)
- B(g);N_GUARD,N_SPINQ(c)::S(G),XP(h)
- S(b);::S(H)
- S(b);N_SPINQ(c)::S(H)
- Refutation
- S(b);
- Try
- R(B);
- Threat
- DUALS(3)
- Refutation
- P(e);XR(B)
- Try
- R(E);CHECK,XQ(c)
- Refutation
- P(f);XR(E)
- Try
- Q(D);CHECK,XQ(c)
- Vars
- B(g);P_SPINB(g)::S(G),XP(h)
- Refutation
- P(f);P_SPINP(f),XQ(D)
- Try
- Q(D);CHECK,N_PINQ(c)
- Refutation
- Q(c);P_SPINQ(c),XQ(D)
- Try
- Actual
- R(B);
- Threat
- QAB1(D),XS(b)
- Vars
- S(b);SBLOCK,XP(F)::S(H)
- S(b);::S(G)
- S(b);N_SPINQ(c)::S(G)
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).