MESON Chess Problem Database
Problem Display
PID: 197338 (BR1b4/nbpRBK2/3rN3/Q3p3/P1k5/1p1n1P2/1PP5/8 w - - 0 1)
Ouellet, Charles
The Problemist, 2018
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Ra6
- 2.Qc3#
- 2.cxd3#
- 1...Rb6
- 2.Qc3#
- 2.cxd3#
- 1...Rc6
- 2.Qc3#
- 2.Qd5#
- 2.cxd3#
- 1...Rxe6
- 2.Qc3#
- 2.cxd3#
- 1...Bxf3
- 2.Qc3#
- 2.cxb3#
- 1...Be4
- 2.Qc3#
- 2.cxb3#
- 1...Bd5
- 2.Qc3#
- 2.cxb3#
- 1...Ba6
- 2.Qc3#
- 2.cxb3#
- 1...Bc6
- 2.cxb3#
- 1...Bxa8
- 2.cxb3#
- 1...Bc8
- 2.Qc3#
- 2.cxb3#
- 1...Sc1
- 2.Qc5#
- 1...Se1
- 2.Qc5#
- 1...Sxb2
- 2.Qc5#
- 1...Sf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sb5
- 2.Qxb5#
- 1...Sc6
- 2.Qb5#
- 1...Sc8
- 2.Qb5#
- 1...Rd4
- Tries
- 1.Bxb7?
- threat
- 2.Qc3#
- 1...Sxb2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sb5
- 2.Qxb5#
- 1...Sc6
- 2.Ba6#
- 2.Qb5#
- 1...c6!
- threat
- 1.Rxd6?
- threat
- 2.Qc3#
- 2.cxd3#
- 1...Sxb2
- 2.Qc5#
- 1...bxc2
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 2.cxb3#
- 1...Bd5
- 2.Bxd5#
- 2.Qc3#
- 2.Qxd5#
- 2.cxb3#
- 1...Sc1
- 2.Qc3#
- 2.Qc5#
- 1...Se1
- 2.Qc3#
- 2.Qc5#
- 1...Sf2
- 2.Qc3#
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc3#
- 2.Qc5#
- 1...Sc5
- 2.Qc3#
- 2.Qxc5#
- 1...Sb5
- 2.Qxb5#
- 2.cxd3#
- 1...e4
- 2.Rd4#
- 2.Qc3#
- 1...cxd6!
- threat
- 1.Rxb7?
- threat
- 2.cxb3#
- 1...Sxb2
- 2.Qc5#
- 1...bxc2
- 2.b3#
- 1...Sc5
- 2.Rb4#
- 2.Qxc5#
- 1...Sb5
- 2.Qxb5#
- 1...Rb6
- 2.Qc3#
- 2.Qd5#
- 2.cxd3#
- 1...Sc1
- 2.Rb4#
- 2.Qc5#
- 1...Se1
- 2.Rb4#
- 2.Qc5#
- 1...Sf2
- 2.Rb4#
- 2.Qc5#
- 1...Sb4
- 2.Rxb4#
- 2.Qc5#
- 1...Sf4
- 2.Rb4#
- 2.Qc5#
- 1...c5!
- threat
- 1.cxd3+?
- 1...Rxd3
- 2.Qb4#
- 2.Qc5#
- 1...Kxd3!
- 1...Rxd3
- 1.Bxb7?
- Keys
- 1.Qa6+!
- 1...Kb4
- 2.c3#
- 1...Kd5
- 2.c4#
- 1...Rxa6
- 2.cxd3#
- 1...Bxa6
- 2.cxb3#
- 1...Sb5
- 2.Qxb5#
- 1...Kb4
- 1.Qa6+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 13
- Sets
- R(e);::QAR1(E)
- B(g);::P(B),XP(a)
- B(g);XB(J)::P(B),XP(a)
- S(b);N_GUARD::QAR1(E)
- S(b);N_GUARD,XP(A)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- S(f);N_GUARD::QAB1(E),XS(f)
- S(f);N_GUARD::QAB1(E)
- Tries
- Try
- B(J);XB(g)
- Threat
- QAR1(E)
- Vars
- S(b);N_GUARD,XP(A)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- Refutation
- P(h);
- Try
- R(G);XR(e)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(A)::QAR1(E)
- P(a);XP(B)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- Refutation
- P(h);XR(G)
- Try
- R(K);XB(g)
- Threat
- P(B),XP(a)
- Vars
- S(b);N_GUARD,XP(A)::QAR1(E)
- P(a);OGATE,XP(B)::P(A)
- S(f);N_GUARD::QAB1(E),XS(f)
- Refutation
- P(h);
- Try
- P(B);CHECK,XS(b)
- Refutation
- K(c);P_SPINR(e),S_FLIGHT,XP(B)
- Try
- Actual
- Q(E);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINB(g),P_SPINR(e)::P(B)
- K(c);OGATE,P_SPINB(g),P_SPINR(e),S_FLIGHT::P(B)
- R(e);XQ(E)::P(B),XS(b)
- B(g);XQ(E)::P(B),XP(a)
- S(f);N_GUARD,P_SPINS(f)::QAB1(E),XS(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).