MESON Chess Problem Database
Problem Display
PID: 156964 (br2B2B/4N3/3NPrp1/5R2/1k2p3/1P3Q1q/1K1n4/2R5 w - - 0 1)
Niestroj, Georg
Troll, 2015
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qc3#
- 1...Qg2
- 2.Qc3#
- 1...Qg4
- 2.Qc3#
- 1...Qxf5
- 2.Qc3#
- 1...Qh1
- 2.Qc3#
- 1...Qh2
- 2.Qc3#
- 1...Qh4
- 2.Qc3#
- 1...Qh5
- 2.Qc3#
- 1...Qh6
- 2.Qc3#
- 1...Qh7
- 2.Qc3#
- 1...Qxh8
- 2.Qc3#
- 1...Rxe6
- 2.Bc3#
- 1...Rf7
- 2.Bc3#
- 1...Rf8
- 2.Bc3#
- 1...Rb5
- 2.Rxb5#
- 1...Rb7
- 2.Sc6#
- 1...Rc8
- 2.Rb5#
- 1...Rd8
- 2.Rb5#
- 1...Rxe8
- 2.Rb5#
- 1...Bc6
- 2.Sxc6#
- 1...Bb7
- 2.Rb5#
- 1...Sb1
- 2.Rc4#
- 1...Sf1
- 2.Rc4#
- 1...Sxb3
- 2.Rc4#
- 1...Sxf3
- 2.Rc4#
- 1...Sc4+
- 2.Rxc4#
- 1...Qf1
- Tries
- 1.Sd5+?
- 1...Ka5
- 2.Ra1#
- 1...Bxd5!
- 1...Ka5
- 1.Qxe4+?
- 1...Sc4+
- 2.Rxc4#
- 2.Qxc4#
- 1...Sxe4
- 2.Rc4#
- 1...Bxe4!
- 1...Sc4+
- 1.Qe3?
- threat
- 2.Qc5#
- 1...Sc4+
- 2.Rxc4#
- 1...Qxf5
- 2.Qxd2#
- 2.Qc3#
- 1...Rxf5
- 2.Bc3#
- 1...Sxb3
- 2.Rc4#
- 1...Rb5
- 2.Rxb5#
- 1...Rc8
- 2.Rb5#
- 2.Qb6#
- 1...Qxe3!
- threat
- 1.Qxh3?
- threat
- 2.Qc3#
- 1...Sc4+
- 2.Rxc4#
- 1...Rc8
- 2.Rb5#
- 1...Sb1
- 2.Rc4#
- 1...Sf3
- 2.Rc4#
- 1...e3!
- threat
- 1.Sd5+?
- Keys
- 1.Sb7!
- threat
- 2.Sd5#
- 2.Sc6#
- 2.Rb5#
- 1...Sc4+
- 2.Rxc4#
- 1...Qxf5
- 2.Qc3#
- 1...Rxf5
- 2.Bc3#
- 1...Rxe6
- 2.Sd5#
- 2.Bc3#
- 2.Rb5#
- 1...Rxb7
- 2.Sc6#
- 1...Rxe8
- 2.Sc6#
- 1...Bxb7
- 2.Rb5#
- 1...Sxb3
- 2.Sd5#
- 1...gxf5
- 2.Sd5#
- 1...Qf1
- 2.Sd5#
- 2.Sc6#
- 2.Qc3#
- 1...Qh5
- 2.Sd5#
- 2.Sc6#
- 2.Qc3#
- 1...Rc8
- 2.Sd5#
- 2.Rb5#
- 1...Rd8
- 2.Sc6#
- 2.Rb5#
- threat
- 1.Sb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 20
- Sets
- Q(b);N_GUARD::QAB1(D)
- Q(b);N_GUARD,XR(E)::QAB1(D)
- Q(b);N_GUARD,XB(J)::QAB1(D)
- R(e);OGATE,XP(G)::B(J)
- R(e);OGATE::B(J)
- R(h);N_GUARD::R1(E),XR(h)
- R(h);S_CUTB(g)::S(H)
- R(h);N_GUARD::R1(E)
- R(h);N_GUARD,XB(I)::R1(E)
- B(g);N_GUARD::S(H),XB(g)
- B(g);S_CUTR(h)::R1(E)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD,XP(C)::R1(A)
- S(a);N_GUARD,XQ(D)::R1(A)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- Tries
- Try
- S(H);CHECK
- Vars
- K(c);P_PINP(C),S_FLIGHT::R(A)
- Refutation
- B(g);XS(H)
- Try
- Q(D);CHECK,XP(d)
- Vars
- S(a);N_GUARD,XQ(D)::R1(A)
- Refutation
- B(g);XQ(D)
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- R(e);OGATE,XR(E)::B(J)
- S(a);N_GUARD,XP(C)::R1(A)
- R(h);N_GUARD::R1(E),XR(h)
- Refutation
- Q(b);XQ(D)
- Try
- Q(D);XQ(b)
- Threat
- QAB1(D)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- R(h);N_GUARD::R1(E)
- S(a);N_GUARD::R1(A)
- Refutation
- P(d);
- Try
- Actual
- S(F);
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- Q(b);N_GUARD,XR(E)::QAB1(D)
- R(e);OGATE,XR(E)::B(J)
- R(h);XS(F)::S(H)
- R(h);XB(I)::S(H)
- B(g);XS(F)::R1(E)
- S(a);XP(C)::S(H)
- P(f);XR(E)::S(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).