MESON Chess Problem Database
Problem Display
PID: 238029 (4n3/K7/1Bp3N1/3R1N1n/QP2k3/3R4/2b1p3/1r2r3 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Hlas l'udu, 1980
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Qxb4#
- 1...Sg3
- 2.Sxg3#
- 1...Sf4
- 2.Sg3#
- 1...Shf6
- 2.Sg3#
- 1...Shg7
- 2.Sg3#
- 1...Sd6
- 2.Sxd6#
- 1...Sef6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Seg7
- 2.Sd6#
- 1...c5
- 2.Qxe8#
- 1...Rxb4
- Tries
- 1.Sh6?
- threat
- 2.R5d4#
- 1...Rxb4
- 2.Qxb4#
- 1...cxd5
- 2.Re3#
- 1...c5
- 2.Qxe8#
- 1...Bxd3!
- threat
- 1.Rc3?
- threat
- 2.Re5#
- 1...Kxd5
- 2.Qxc6#
- 1...cxd5
- 2.Qxc2#
- 1...Bd3!
- threat
- 1.Rc5?
- threat
- 2.Re3#
- 1...Kxd3
- 2.Qxc2#
- 1...Bxd3
- 2.Qxc6#
- 1...Rb3!
- threat
- 1.Qxc2?
- threat
- 2.Re5#
- 2.Qc4#
- 1...Rxb4
- 2.Re5#
- 1...cxd5
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 1...Rbc1
- 2.Re5#
- 1...Rec1
- 2.Re5#
- 2.Qxe2#
- 1...Sd6
- 2.Sxd6#
- 2.Re5#
- 1...Ra1+!
- threat
- 1.Qxc6?
- threat
- 2.Re3#
- 2.Qxe8#
- 2.Qc4#
- 2.Qe6#
- 1...Rxb4
- 2.Re3#
- 2.Qxe8#
- 2.Qe6#
- 1...Bxd3
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 1...Rb3
- 2.Qxe8#
- 2.Qc4#
- 2.Qe6#
- 1...Bb3
- 2.Re3#
- 2.Qxe8#
- 2.Qe6#
- 1...Ba4
- 2.Re3#
- 2.Qc4#
- 2.Qe6#
- 1...Sf4
- 2.Sg3#
- 2.Re3#
- 2.Qc4#
- 1...Shf6
- 2.Sg3#
- 2.Re3#
- 2.Qc4#
- 2.Qe6#
- 1...Shg7
- 2.Sg3#
- 2.Re3#
- 2.Qc4#
- 1...Sd6
- 2.Sxd6#
- 2.Re3#
- 1...Sef6
- 2.Sd6#
- 2.Re3#
- 2.Qc4#
- 2.Qe6#
- 1...Sc7
- 2.Sd6#
- 2.Re3#
- 2.Qc4#
- 1...Seg7
- 2.Sd6#
- 2.Re3#
- 2.Qc4#
- 1...Ra1+!
- threat
- 1.Qa6?
- threat
- 2.Re5#
- 2.Qc4#
- 1...Rxb4
- 2.Re5#
- 1...Bxd3
- 2.Qxd3#
- 1...Ra1
- 2.Re5#
- 1...Bb3
- 2.Re5#
- 1...Sd6
- 2.Sxd6#
- 2.Re5#
- 1...cxd5!
- threat
- 1.b5+?
- 1...Rb4
- 2.Qxb4#
- 1...Bxa4!
- 1...Rb4
- 1.Sh6?
- Keys
- 1.Sfh4!
- threat
- 2.R5d4#
- 1...Rxb4
- 2.Qxb4#
- 1...Bxd3
- 2.Re5#
- 1...cxd5
- 2.Re3#
- 1...c5
- 2.Qxe8#
- threat
- 1.Sfh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(a);OGATE,P_SPINR(a),XP(C)::QAR(B),XR(a)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- P(g);OGATE::QAR(B),XS(h)
- Tries
- Try
- S(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,P_SPINR(a),XP(C)::QAR(B),XR(a)
- P(g);SBLOCK,XR(D)::R1(A)
- P(g);OGATE::QAR(B),XS(h)
- Refutation
- B(c);XR(A)
- Try
- R(A);
- Threat
- R1(D)
- Vars
- K(e);OGATEB,S_FLIGHT,XR(D)::QAB1(B),XP(g)
- P(g);SBLOCK,XR(D)::QAB(B),XB(c)
- Refutation
- B(c);
- Try
- R(D);
- Threat
- R1(A)
- Vars
- K(e);OGATEB,S_FLIGHT,XR(A)::QAB1(B),XB(c)
- B(c);SBLOCK,XR(A)::QAB(B),XP(g)
- Refutation
- R(a);
- Try
- Q(B);XB(c)
- Threat
- DUALS(2)
- Vars
- R(a);XP(C)::R1(D)
- R(a);::R1(D)
- Refutation
- R(a);CHECK
- Try
- Q(B);XP(g)
- Threat
- DUALS(4)
- Refutation
- R(a);CHECK
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(a);XP(C)::R1(D)
- B(c);OGATE,XR(A)::QAB1(B),XB(c)
- R(a);P_PINQ(B)::R1(D)
- B(c);::R1(D)
- Refutation
- P(g);XR(D)
- Try
- P(C);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR(B),XR(a)
- Refutation
- B(c);XQ(B)
- Try
- Actual
- S(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,P_SPINR(a),XP(C)::QAR(B),XR(a)
- B(c);SBLOCK,XR(A)::R1(D)
- P(g);SBLOCK,XR(D)::R1(A)
- P(g);OGATE::QAR(B),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).