MESON Chess Problem Database
Problem Display
PID: 20975 (8/QN4p1/6R1/3rrk1P/6NK/p4PP1/q3P3/bb6 w - - 0 1)
Goethart, Gerhardus Hendrik
Tubantia, 1914
#2
9 + 8
| 3360 | Simple Two-move Themes | 1924 |
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 274 | diagrammes | 1973 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Sd6#
- 1...Rb5
- 2.Sd6#
- 1...Rc5
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Rg5#
- 1...Be4
- 2.Se3#
- 1...Ra5
- Tries
- 1.Sc5?
- threat
- 2.Rg5#
- 2.Qf7#
- 1...Rxe2
- 2.Rg5#
- 1...Qd2
- 2.Qf7#
- 1...Rd1
- 2.Rg5#
- 1...Rd2
- 2.Rg5#
- 1...Rd3
- 2.Rg5#
- 1...Rd4
- 2.Rg5#
- 1...Rd6
- 2.Rg5#
- 1...Rd7
- 2.Rg5#
- 1...Rd8
- 2.Rg5#
- 1...Re3
- 2.Rg5#
- 1...Re4
- 2.Rg5#
- 1...Re6
- 2.Rg5#
- 1...Re7
- 2.Rg5#
- 1...Re8
- 2.Rg5#
- 1...Rxc5!
- threat
- 1.Sd8?
- threat
- 2.Rg5#
- 2.Qf7#
- 1...Rxe2
- 2.Rg5#
- 1...Qd2
- 2.Qf7#
- 1...Rd1
- 2.Rg5#
- 1...Rd2
- 2.Rg5#
- 1...Rd3
- 2.Rg5#
- 1...Rd4
- 2.Rg5#
- 1...Ra5
- 2.Rg5#
- 1...Rb5
- 2.Rg5#
- 1...Rc5
- 2.Rg5#
- 1...Rd6
- 2.Rg5#
- 1...Rd7
- 2.Rg5#
- 1...Re3
- 2.Rg5#
- 1...Re4
- 2.Rg5#
- 1...Re6
- 2.Rg5#
- 1...Re7
- 2.Rg5#
- 1...Re8
- 2.Rg5#
- 1...Rxd8!
- threat
- 1.Qb6?
- threat
- 2.Rg5#
- 1...Rd6
- 2.Sxd6#
- 1...Qd2!
- threat
- 1.Qa6?
- threat
- 2.Rg5#
- 1...Rd6
- 2.Sxd6#
- 1...Qd2!
- threat
- 1.e4+?
- 1...Bxe4
- 2.Se3#
- 1...Rxe4!
- 1...Bxe4
- 1.Sc5?
- Keys
- 1.Qc5!
- threat
- 2.Qf8#
- 1...Rxc5
- 2.Sd6#
- 1...Rxe2
- 2.Sd6#
- 1...Rd1
- 2.Se3#
- 1...Rd2
- 2.Se3#
- 1...Rd3
- 2.e4#
- 1...Rd4
- 2.Qxe5#
- 1...Rd6
- 2.Se3#
- 2.Sxd6#
- 1...Rd7
- 2.Se3#
- 1...Rd8
- 2.Se3#
- 1...Re3
- 2.Sd6#
- 1...Re4
- 2.Sd6#
- 1...Re6
- 2.Rg5#
- 1...Re7
- 2.Sd6#
- 1...Re8
- 2.Sd6#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 4
- Sets
- R(e);N_GUARD::S(I)
- R(e);N_GUARD::S(I),XR(e)
- R(f);SBLOCK::R1(G)
- B(b);S_CUTR(f)::S(D)
- Tries
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(f);XP(A)::R1(G)
- Q(c);::QAR2(H)
- R(e);::R1(G)
- R(e);P_PINS(D)::R1(G)
- R(f);::R1(G)
- R(f);P_PINS(D)::R1(G)
- Refutation
- R(e);XS(I)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(f);XP(A)::R1(G)
- Q(c);::QAR2(H)
- R(e);::R1(G)
- R(e);P_PINS(D)::R1(G)
- R(f);::R1(G)
- R(f);P_PINS(D)::R1(G)
- Refutation
- R(e);XS(I)
- Try
- Q(H);
- Threat
- R1(G)
- Vars
- R(e);N_GUARD::S(I),XR(e)
- Refutation
- Q(c);
- Try
- Q(H);
- Threat
- R1(G)
- Vars
- R(e);N_GUARD::S(I),XR(e)
- Refutation
- Q(c);
- Try
- P(A);CHECK
- Vars
- B(b);XP(A)::S(D)
- Refutation
- R(f);P_PINS(D),XP(A)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- R(e);N_GUARD,XQ(H)::S(I)
- R(f);P_SPINR(e),XP(A)::S(I)
- R(e);P_SPINR(f)::S(D)
- R(e);P_SPINR(f),S_CUTB(b)::P(A)
- R(e);OGATE,P_PINS(D),P_SPINR(f)::QAR1(H),XR(f)
- R(f);P_SPINR(e)::S(I)
- R(f);P_PINS(D),P_SPINR(e)::S(I)
- R(f);P_SPINR(e),SBLOCK::R1(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).