MESON Chess Problem Database
Problem Display
PID: 159736 (2R4B/8/5q1r/pR1PbQ1b/K2k4/2pNpn2/4B3/n2r4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Main-Post, 1964
#2
8 + 11
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qe7
- 2.Qf4#
- 1...Qd8
- 2.Qf4#
- 1...Qa6
- 2.Qf4#
- 1...Qb6
- 2.Qf4#
- 1...Qc6
- 2.Qf4#
- 1...Qd6
- 2.Qf4#
- 1...Qe6
- 2.Qf4#
- 1...Rxd3
- 2.Qxd3#
- 1...Bf4
- 2.Qxf4#
- 1...Qe7
- Tries
- 1.Sc1?
- threat
- 2.Rc4#
- 1...Qc6
- 2.Qf4#
- 1...Rd3
- 2.Qxd3#
- 1...Sd2
- 2.Qd3#
- 1...Bc7!
- threat
- 1.Se1?
- threat
- 2.Rc4#
- 1...Qc6
- 2.Qf4#
- 1...Rd3
- 2.Qxd3#
- 1...Sd2
- 2.Qd3#
- 1...Bc7!
- threat
- 1.Sb2?
- threat
- 2.Rc4#
- 1...Qc6
- 2.Qf4#
- 1...Sd2
- 2.Qd3#
- 1...Bc7!
- threat
- 1.Sf2?
- threat
- 2.Rc4#
- 2.Qe4#
- 1...Qxf5
- 2.Rc4#
- 1...Bc7
- 2.Qe4#
- 1...Qh4
- 2.Rc4#
- 1...Qc6
- 2.Qe4#
- 2.Qf4#
- 1...Qg6
- 2.Rc4#
- 1...Rd3
- 2.Qxd3#
- 2.Qe4#
- 1...Bg6
- 2.Rc4#
- 1...Sd2
- 2.Qd3#
- 1...Sg5
- 2.Rc4#
- 1...exf2!
- threat
- 1.Sf4?
- threat
- 2.Rc4#
- 1...Bc7
- 2.Se6#
- 1...Rd3
- 2.Qxd3#
- 1...Sd2
- 2.Qd3#
- 1...Qc6!
- threat
- 1.Sxe5?
- threat
- 2.Sc6#
- 2.Rc4#
- 1...Qxe5
- 2.Rc4#
- 2.Qf4#
- 1...Qxh8
- 2.Rc4#
- 2.Qf4#
- 1...Qxf5
- 2.Rc4#
- 1...Rxh8
- 2.Rc4#
- 1...Qg7
- 2.Rc4#
- 2.Qf4#
- 1...Qc6
- 2.Sxf3#
- 2.Sxc6#
- 2.Qf4#
- 1...Rd3
- 2.Rc4#
- 1...Be8
- 2.Sxf3#
- 2.Rc4#
- 1...Sd2
- 2.Sc6#
- 1...c2
- 2.Rc4#
- 1...Sxe5!
- threat
- 1.Qg4+?
- 1...Qf4
- 2.Qxf4#
- 1...Bf4
- 2.Qxf4#
- 1...Bxg4!
- 1...Qf4
- 1.Sc1?
- Keys
- 1.Sb4!
- threat
- 2.Rc4#
- 1...Bc7
- 2.Sc6#
- 1...Qc6
- 2.Qf4#
- 1...Rd3
- 2.Qxd3#
- 1...Sd2
- 2.Qd3#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(j);N_GUARD,P_SPINB(h)::QAR2(F)
- Q(j);N_GUARD,P_PINR(D),P_SPINB(h)::QAR2(F)
- R(b);OGATE,XS(B)::QAR1(F),XR(b)
- B(h);N_GUARD,P_SPINQ(j)::QAR2(F),XB(h)
- Tries
- Try
- S(B);
- Threat
- R1(G)
- Vars
- Q(j);N_GUARD,P_PINR(D),P_SPINB(h)::QAR2(F)
- R(b);N_GUARD::QAR1(F),XR(b)
- S(e);S_CUTR(b)::QAR1(F)
- Refutation
- B(h);P_SPINQ(j)
- Try
- S(B);
- Threat
- R1(G)
- Vars
- Q(j);N_GUARD,P_PINR(D),P_SPINB(h)::QAR2(F)
- R(b);N_GUARD::QAR1(F),XR(b)
- S(e);S_CUTR(b)::QAR1(F)
- Refutation
- B(h);P_SPINQ(j)
- Try
- S(B);
- Threat
- R1(G)
- Vars
- Q(j);N_GUARD,P_PINR(D),P_SPINB(h)::QAR2(F)
- S(e);S_CUTR(b)::QAR1(F)
- Refutation
- B(h);P_SPINQ(j)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(j);P_SPINB(h),XQ(F)::R1(G)
- B(h);P_SPINQ(j)::QAR1(F)
- Q(j);P_SPINB(h)::R1(G)
- B(i);::R1(G)
- S(e);S_CUTR(b)::QAR1(F)
- S(e);::R1(G)
- Refutation
- P(d);XS(B)
- Try
- S(B);
- Threat
- R1(G)
- Vars
- B(h);P_SPINQ(j)::S(B)
- R(b);N_GUARD::QAR1(F),XR(b)
- S(e);S_CUTR(b)::QAR1(F)
- Refutation
- Q(j);P_PINR(D),P_SPINB(h)
- Try
- S(B);XB(h)
- Threat
- DUALS(2)
- Vars
- Q(j);XQ(F)::R1(G)
- R(k);XB(H)::R1(G)
- R(b);::R1(G)
- S(e);::S(B)
- P(c);::R1(G)
- Refutation
- S(e);XS(B)
- Try
- Q(F);CHECK
- Vars
- Q(j);N_GUARD,P_SPINB(h),P_SPINQ(j)::QAR2(F),XQ(j)
- B(h);N_GUARD,P_SPINB(h),P_SPINQ(j)::QAR2(F),XB(h)
- Refutation
- B(i);XQ(F)
- Try
- Actual
- S(B);
- Threat
- R1(G)
- Vars
- B(h);P_SPINQ(j)::S(B)
- Q(j);N_GUARD,P_PINR(D),P_SPINB(h)::QAR2(F)
- R(b);N_GUARD::QAR1(F),XR(b)
- S(e);S_CUTR(b)::QAR1(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).