MESON Chess Problem Database
Problem Display
PID: 263973 (8/6B1/8/3Rn3/4k3/R1b5/B2pn1N1/3K1Q2 w - - 0 1)
Sammelius, Carel Johan Robert
Tijdschrift vd KNSB, 1949
#2
7 + 5
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Rxe5#
- 1...Sf4
- 2.Qxf4#
- 1...Sd3
- 2.Qxe2#
- 2.Qf5#
- 1...Sf3
- 2.Qxe2#
- 1...Sc4
- 2.Qf5#
- 1...Sg4
- 2.Qf5#
- 1...Sc6
- 2.Qxe2#
- 2.Qf5#
- 1...Sg6
- 2.Qxe2#
- 2.Qf5#
- 1...Sd7
- 2.Qxe2#
- 2.Qf5#
- 1...Sf7
- 2.Qxe2#
- 2.Qf5#
- 1...Ba1
- Tries
- 1.Bb1+?
- 1...Sd3
- 2.Qf5#
- 1...Kxd5!
- 1...Sd3
- 1.Bc4?
- 1...Sxc4
- 2.Qf5#
- 1...Sf4
- 2.Qxf4#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Rxe5#
- 2.Qf4#
- 1...Sd3
- 2.Qxe2#
- 2.Qf5#
- 1...Sf3
- 2.Qxe2#
- 1...Sg4
- 2.Qf5#
- 1...Sc6
- 2.Qxe2#
- 2.Qf5#
- 1...Sg6
- 2.Qxe2#
- 2.Qf5#
- 1...Sd7
- 2.Qxe2#
- 2.Qf5#
- 1...Sf7
- 2.Qxe2#
- 2.Qf5#
- 1...Bd4!
- 1...Sxc4
- 1.Bxe5?
- 1...Bxe5
- 2.Re3#
- 2.Qf3#
- 1...Sf4
- 2.Qxf4#
- 1...Ba1
- 2.Re3#
- 2.Qf3#
- 1...Bb2
- 2.Re3#
- 2.Qf3#
- 1...Bb4
- 2.Re3#
- 2.Qf3#
- 1...Bd4
- 2.Qf3#
- 1...Ba5
- 2.Re3#
- 2.Qf3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qd3#
- 2.Qf4#
- 1...Sg3
- 2.Qd3#
- 2.Qf4#
- 1...Sd4!
- 1...Bxe5
- 1.Bf6?
- 1...Sf4
- 2.Qxf4#
- 1...Sc4
- 2.Qf5#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Rxe5#
- 1...Sd3
- 2.Qxe2#
- 2.Qf5#
- 1...Sf3
- 2.Qxe2#
- 1...Sg4
- 2.Qf5#
- 1...Sc6
- 2.Qxe2#
- 2.Qf5#
- 1...Sg6
- 2.Qxe2#
- 2.Qf5#
- 1...Sd7
- 2.Qxe2#
- 2.Qf5#
- 1...Sf7
- 2.Qxe2#
- 2.Qf5#
- 1...Bd4!
- 1...Sf4
- 1.Bh8?
- 1...Sf4
- 2.Qxf4#
- 1...Sc4
- 2.Qf5#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Rxe5#
- 1...Sd3
- 2.Qxe2#
- 2.Qf5#
- 1...Sf3
- 2.Qxe2#
- 1...Sg4
- 2.Qf5#
- 1...Sc6
- 2.Qxe2#
- 2.Qf5#
- 1...Sg6
- 2.Qxe2#
- 2.Qf5#
- 1...Sd7
- 2.Qxe2#
- 2.Qf5#
- 1...Sf7
- 2.Qxe2#
- 2.Qf5#
- 1...Bd4!
- 1...Sf4
- 1.Rxc3?
- threat
- 2.Re3#
- 1...Sf4
- 2.Qxf4#
- 1...Sc4
- 2.Qf3#
- 2.Qf5#
- 1...Sd3
- 2.Qxe2#
- 2.Qf5#
- 1...Sg4
- 2.Qf3#
- 2.Qf5#
- 1...Sxc3+!
- threat
- 1.Rd7?
- 1...Sf4
- 2.Qxf4#
- 1...Sf3
- 2.Bb1#
- 1...Bd4
- 2.Bd5#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Bd5#
- 1...Sd3
- 2.Bd5#
- 1...Sc4
- 2.Bb1#
- 1...Sg4
- 2.Bb1#
- 1...Sc6
- 2.Bb1#
- 1...Sg6
- 2.Bb1#
- 1...Sf7
- 2.Bb1#
- 1...Sxd7!
- 1...Sf4
- 1.Rd8?
- 1...Sf4
- 2.Qxf4#
- 1...Sf3
- 2.Bb1#
- 1...Bd4
- 2.Bd5#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Bd5#
- 1...Sd3
- 2.Bd5#
- 1...Sc4
- 2.Bb1#
- 1...Sg4
- 2.Bb1#
- 1...Sc6
- 2.Bb1#
- 1...Sg6
- 2.Bb1#
- 1...Sf7
- 2.Bb1#
- 1...Sd7!
- 1...Sf4
- 1.Bb1+?
- Keys
- 1.Rd6!
- 1...Sf4
- 2.Qxf4#
- 1...Sf3
- 2.Bb1#
- 1...Bd4
- 2.Bd5#
- 1...Ba1
- 2.Re3#
- 1...Bb2
- 2.Re3#
- 1...Bb4
- 2.Re3#
- 1...Ba5
- 2.Re3#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Bd5#
- 1...Sd3
- 2.Bd5#
- 1...Sc4
- 2.Bb1#
- 1...Sg4
- 2.Bb1#
- 1...Sc6
- 2.Bb1#
- 1...Sg6
- 2.Bb1#
- 1...Sd7
- 2.Bb1#
- 1...Sf7
- 2.Bb1#
- 1...Sf4
- 1.Rd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK,S_CUTB(c)::R1(F),XS(e)
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);::QAR2(B),XS(b)
- S(e);::QAB1(B)
- Tries
- Try
- B(C);CHECK
- Vars
- S(e);P_SPINS(e)::QAB1(B)
- Refutation
- K(d);S_FLIGHT,XR(F)
- Try
- B(C);
- Vars
- S(e);XB(C)::QAB1(B)
- S(b);N_GUARD::QAR1(B),XS(b)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(e);::QAR2(B),XS(b)
- S(e);::QAB1(B)
- Refutation
- B(c);
- Try
- B(G);XS(e)
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- B(c);::QAB1(B)
- S(b);N_GUARD::QAR1(B)
- Refutation
- S(b);
- Try
- B(G);
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);::QAB1(B)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK,S_CUTB(c)::R1(F),XS(e)
- S(e);::QAR2(B),XS(b)
- Refutation
- B(c);
- Try
- B(G);
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);::QAB1(B)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK,S_CUTB(c)::R1(F),XS(e)
- S(e);::QAR2(B),XS(b)
- Refutation
- B(c);
- Try
- R(E);XB(c)
- Threat
- R1(E)
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- Refutation
- S(b);CHECK,XR(E)
- Try
- R(F);
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);N_GUARD::B(C)
- B(c);SBLOCK::B(C)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK::B(C)
- S(e);SBLOCK::B(C)
- Refutation
- S(e);XR(F)
- Try
- R(F);
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);N_GUARD::B(C)
- B(c);SBLOCK::B(C)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK::B(C)
- S(e);SBLOCK::B(C)
- Refutation
- S(e);
- Try
- Actual
- R(F);
- Vars
- S(b);N_GUARD::QAR1(B),XS(b)
- S(e);N_GUARD::B(C)
- B(c);SBLOCK::B(C)
- B(c);OGATE::R1(E)
- S(b);N_GUARD::QAR1(B)
- S(b);SBLOCK::B(C)
- S(e);SBLOCK::B(C)
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).