MESON Chess Problem Database
Problem Display
PID: 259488 (8/7P/B1p3b1/n1R3B1/1P1k4/4NP2/2Q2n1r/1K4R1 w - - 0 1)
Cheylan, Yves
Main-Post, 1975
#2
10 + 6
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.h8Q#
- 2.h8B#
- 1...Bxc2+
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 2.Qb2#
- 2.Qc3#
- 2.h8Q#
- 2.h8B#
- 1...Bf7
- 2.Sf5#
- 2.Qb2#
- 2.Qc3#
- 1...Be8
- 2.Sf5#
- 2.Qb2#
- 2.Qc3#
- 1...Sd3
- 2.Qc3#
- 1...Sh3
- 2.h8Q#
- 2.h8B#
- 1...Se4
- 2.Qd3#
- 1...Rg2
- Tries
- 1.Rd1+?
- 1...Bd3
- 2.Sf5#
- 1...Sd3
- 2.Qc3#
- 1...Sxd1!
- 1...Bd3
- 1.Rg4+?
- 1...Be4
- 2.Sf5#
- 1...Se4
- 2.Qd3#
- 2.Qc3#
- 1...Sxg4!
- 1...Be4
- 1.Rf5?
- threat
- 2.Qb2#
- 2.Qc5#
- 1...Sd1
- 2.Rg4#
- 2.Qd3#
- 2.Qc5#
- 1...Sh1
- 2.Rg4#
- 2.Qd3#
- 2.Qc5#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Se4
- 2.Qd3#
- 1...Sg4
- 2.Rxg4#
- 2.Qd3#
- 2.Qc5#
- 1...Sb3
- 2.Qb2#
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sb7
- 2.Qb2#
- 2.Qc4#
- 1...c5
- 2.Rd5#
- 2.Qb2#
- 2.Qxc5#
- 1...Bxf5!
- threat
- 1.Qxg6?
- threat
- 2.Sc2#
- 2.Sf5#
- 2.Qd6#
- 2.Qf6#
- 2.Qg7#
- 1...Rxh7
- 2.Sc2#
- 2.Sf5#
- 2.Qd6#
- 2.Qf6#
- 1...Sd1
- 2.Sf5#
- 2.Rg4#
- 2.Qd3#
- 2.Qe4#
- 2.Qd6#
- 2.Qf6#
- 2.Qg7#
- 1...Rh6
- 2.Sc2#
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 2.Rg4#
- 2.Qd3#
- 2.Qe4#
- 2.Qd6#
- 2.Qf6#
- 2.Qg7#
- 1...Sd3
- 2.Sf5#
- 2.Qxd3#
- 2.Qe4#
- 2.Qd6#
- 1...Sh3
- 2.Sf5#
- 2.Qd3#
- 2.Qe4#
- 2.Qd6#
- 2.Qf6#
- 2.Qg7#
- 2.h8Q#
- 2.h8B#
- 1...Se4
- 2.Sf5#
- 2.Qxe4#
- 1...Sg4
- 2.Sf5#
- 2.Rxg4#
- 2.Qd3#
- 2.Qe4#
- 2.Qd6#
- 1...Sb7
- 2.Sc2#
- 2.Sf5#
- 2.Qf6#
- 2.Qg7#
- 1...Sc4!
- threat
- 1.Rd1+?
- Keys
- 1.Qf5!
- threat
- 2.Sc2#
- 1...Bxf5+
- 2.Sxf5#
- 1...Sc4
- 2.Rxc4#
- 1...Sd1
- 2.Rg4#
- 1...Sh1
- 2.Rg4#
- 1...Sd3
- 2.Qd7#
- 1...Sh3
- 2.h8Q#
- 2.h8B#
- 1...Se4
- 2.Qe5#
- 1...Sg4
- 2.Rxg4#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(b);N_GUARD::P=Q
- B(f);CHECK,XQ(C)::S(D),XB(f)
- B(f);N_GUARD::S(D),XB(f)
- S(a);N_PINQ(C)::QAB1(C)
- S(a);S_CUTR(b)::P=Q
- S(a);N_GUARD,N_PINQ(C),S_CUTB(f)::QAR1(C)
- Tries
- Try
- R(B);CHECK
- Vars
- B(f);P_SPINB(f)::S(D)
- S(a);N_PINQ(C),P_SPINS(a)::QAB1(C)
- Refutation
- S(a);XR(B)
- Try
- R(B);CHECK
- Vars
- B(f);P_SPINB(f)::S(D)
- Refutation
- S(a);XR(B)
- Try
- R(G);N_SPINQ(C)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- B(f);P_PINQ(C),XR(G)
- Try
- Q(C);N_SPINQ(C),XB(f)
- Threat
- DUALS(5)
- Refutation
- S(d);
- Try
- Actual
- Q(C);
- Threat
- S(D)
- Vars
- B(f);CHECK,XQ(C)::S(D),XB(f)
- S(d);N_GUARD::R1(G),XS(d)
- S(a);N_GUARD::R(B)
- S(a);N_PINQ(C)::QAR(C)
- S(a);S_CUTR(b)::P=Q
- S(a);N_PINQ(C)::QAB1(C)
- S(a);N_GUARD::R(B),XS(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).