MESON Chess Problem Database
Problem Display
PID: 68445 (1q1bR3/7N/4n2K/R2n2pN/r3k1P1/r4p2/2P2PP1/BBQ4b w - - 0 1)
Morse, Christopher Jeremy
Problem Observer, 2006
#2
12 + 10
| 56 | The Problemist | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Sxg3#
- 1...Qe5
- 2.c3#
- 1...Qa7
- 2.Sg3#
- 2.Rxe6#
- 1...Qxb1
- 2.Sg3#
- 2.Rxe6#
- 1...Qb3
- 2.Sg3#
- 2.Rxe6#
- 2.cxb3#
- 1...Qb4
- 2.Sg3#
- 2.Rxe6#
- 1...Qb5
- 2.Sg3#
- 2.Rxe6#
- 1...Qb6
- 2.Sg3#
- 1...Qb7
- 2.Sg3#
- 2.Rxe6#
- 1...Qa8
- 2.Sg3#
- 2.Rxe6#
- 1...Qc8
- 2.Sg3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Bxa5
- 2.Sxg5#
- 1...Bb6
- 2.Sxg5#
- 1...Bc7
- 2.Sxg5#
- 1...Sc3
- 2.Qe3#
- 1...Sf4
- 2.Sg3#
- 1...Sb6
- 2.c3#
- 1...Sf6
- 2.Sxg5#
- 1...Sc7
- 2.Sg3#
- 2.Re5#
- 1...Se7
- 2.S5f6#
- 2.S7f6#
- 1...Qg3
- Tries
- 1.S5f6+?
- 1...Sxf6
- 2.Sxg5#
- 1...Bxf6!
- 1...Sxf6
- 1.Qxg5?
- threat
- 2.Qxd5#
- 2.Qf5#
- 2.Qg6#
- 1...Bxg5+
- 2.Sxg5#
- 1...Rxa1
- 2.Qxd5#
- 1...Rxa5
- 2.Qf5#
- 2.Qg6#
- 1...Bxa5
- 2.Qf5#
- 2.Qg6#
- 1...fxg2
- 2.Qxd5#
- 2.Qf5#
- 1...Qb2
- 2.Qxd5#
- 1...Rc3
- 2.Qxd5#
- 1...Sc3
- 2.Qe3#
- 1...Qf4
- 2.c3#
- 1...Qe5
- 2.Qxe5#
- 2.c3#
- 1...Qd6
- 2.Qf5#
- 2.Qg6#
- 2.c3#
- 1...Qb3
- 2.Sg3#
- 2.Rxe6#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 2.cxb3#
- 1...Qb5
- 2.Sg3#
- 2.Rxe6#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Qb7
- 2.Sg3#
- 2.Rxe6#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Qa8
- 2.Sg3#
- 2.Rxe6#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 2.c3#
- 1...Rd3
- 2.Qf5#
- 2.Qg6#
- 2.cxd3#
- 1...Rd4
- 2.Qf5#
- 1...Sb4
- 2.Qf5#
- 2.Qg6#
- 1...Sf4
- 2.Sg3#
- 2.Qf5#
- 1...Sb6
- 2.Qf5#
- 2.Qg6#
- 2.c3#
- 1...Sf6
- 2.Qf5#
- 2.Qg6#
- 1...Sc7
- 2.Sg3#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Se7
- 2.S5f6#
- 2.S7f6#
- 1...Se3!
- threat
- 1.Qd1?
- threat
- 2.Qxd5#
- 1...Rxa5
- 2.Qd4#
- 1...Bxa5
- 2.Sxg5#
- 1...Rd4
- 2.Qxd4#
- 1...Se3
- 2.Qxf3#
- 1...Qe5
- 2.c3#
- 1...Qb3
- 2.Rxe6#
- 2.cxb3#
- 1...Qb5
- 2.Rxe6#
- 1...Qb7
- 2.Rxe6#
- 1...Qa8
- 2.Rxe6#
- 1...Rd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sc3
- 2.Qd3#
- 1...Sb4
- 2.Qd4#
- 1...Sf4
- 2.Sg3#
- 1...Sb6
- 2.c3#
- 1...Sf6
- 2.Sxg5#
- 1...Sc7
- 2.Re5#
- 1...Se7
- 2.S7f6#
- 1...Qd6!
- threat
- 1.S5f6+?
- Keys
- 1.Rxe6+!
- 1...Qe5
- 2.Sg3#
- 2.Rxe5#
- 2.c3#
- 1...Qe5
- 1.Rxe6+!
This is after
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 13
- Sets
- Q(i);N_GUARD::S(I),XQ(i)
- Q(i);N_GUARD,N_SPINS(h),SBLOCK::B(B)+P(D)
- Q(i);N_GUARD::S(I)
- R(b);OGATE::B(B)+P(D),XR(b)
- R(b);OGATE::P(D),XR(b)
- B(j);N_GUARD,XR(H)::S(K),XP(g)
- B(j);N_GUARD::S(K),XP(g)
- S(f);N_GUARD,S_CUTR(b)::QAR1(C)
- S(f);S_CUTQ(i)::S(I)
- S(f);S_CUTQ(i)::B(B)+P(D)
- S(f);S_CUTB(j)::S(K),XP(g)
- Tries
- Try
- S(I);CHECK
- Vars
- S(f);XS(I)::S(K),XP(g)
- Refutation
- B(j);XS(I)
- Try
- Q(C);XP(g)
- Threat
- DUALS(3)
- Vars
- B(j);CHECK,XQ(C)::S(K),XB(j)
- R(b);XB(A)::QAB1(C),XS(f)
- Q(i);::QAB1(C),XS(f)
- R(b);::QAB1(C),XS(f)
- S(f);N_GUARD,S_CUTR(b)::QAR1(C)
- Q(i);N_GUARD,P_PINQ(C)::B(B)+P(D)
- R(d);::QAB1(C)
- Refutation
- S(f);
- Try
- Q(C);
- Threat
- QAB1(C),XS(f)
- Vars
- R(d);N_GUARD,XR(H)::QAR1(C)
- B(j);N_GUARD,XR(H)::S(K),XP(g)
- R(d);N_GUARD::QAR1(C),XR(d)
- S(f);S_CUTR(b)::QAB1(C),XP(c)
- Q(i);N_GUARD,N_SPINS(h),SBLOCK::B(B)+P(D)
- Q(i);N_GUARD::R(L),XS(h)
- S(f);S_CUTR(b)::QAB1(C)
- S(f);S_CUTR(d)::QAR1(C)
- S(f);SBLOCK,S_CUTQ(i)::S(I)
- S(f);S_CUTQ(i)::B(B)+P(D)
- S(f);S_CUTB(j)::S(K),XP(g)
- S(f);OGATE::R1(H)
- S(f);N_GUARD,N_SPINS(h),S_CUTB(j)::S(K)
- Refutation
- Q(i);
- Try
- Actual
- R(L);CHECK,XS(h)
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).