MESON Chess Problem Database
Problem Display
PID: 229071 (1k6/N1p5/2B5/R5p1/4p1r1/KN3r2/6Q1/1R3n1q w - - 0 1)
Grigoriev, K
64 Shakhmatnoe obozrenie, 1926
#2
7 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf2
- 2.Sd2#
- 1...Rxb3+
- 2.Rxb3#
- 1...Rff4
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Rf5
- 2.Sc5#
- 1...Rf6
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Rf7
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Rf8
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Se3
- 2.Sc1#
- 1...e3
- 2.Sd4#
- 1...Rf2
- Tries
- 1.Sb5?
- threat
- 2.Ra8#
- 1...Kc8
- 2.Ra8#
- 1...Rxb3+!
- threat
- 1.Sc8?
- threat
- 2.Ra8#
- 1...Kxc8
- 2.Ra8#
- 1...Rxb3+!
- threat
- 1.Qxf3?
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 2.Qf8#
- 1...exf3
- 2.Sd4#
- 1...Qg2
- 2.Sd2#
- 2.Qf8#
- 1...Qg1
- 2.Sd4#
- 2.Sc5#
- 2.Qf8#
- 1...Qh2
- 2.Sd2#
- 2.Qf8#
- 1...Qh5
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Qh6
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Qh8
- 2.Sd4#
- 1...Rg2
- 2.Sd2#
- 2.Qf8#
- 1...Rf4
- 2.Sa1#
- 2.Sc1#
- 2.Sd2#
- 2.Sd4#
- 2.Sc5#
- 1...Sd2
- 2.Qf8#
- 1...Sh2
- 2.Sc1#
- 2.Qf8#
- 1...Se3
- 2.Sc1#
- 2.Qf8#
- 1...Sg3
- 2.Sc1#
- 2.Qf8#
- 1...e3
- 2.Sd4#
- 2.Qf8#
- 1...Qxf3!
- threat
- 1.Qd2?
- threat
- 2.Qb4#
- 2.Qd8#
- 1...Rxb3+
- 2.Rxb3#
- 1...Qg1
- 2.Qd8#
- 1...Qh8
- 2.Qb4#
- 1...Rc3
- 2.Qd8#
- 1...Rd3
- 2.Qb4#
- 1...Rf5
- 2.Sc5#
- 2.Qd8#
- 1...Rf8
- 2.Sa1#
- 2.Sc1#
- 2.Sd4#
- 2.Sc5#
- 2.Qb4#
- 1...e3
- 2.Sd4#
- 2.Qd8#
- 1...Sxd2!
- threat
- 1.Sb5?
- Keys
- 1.Qf2!
- threat
- 2.Rb5#
- 1...Rxb3+
- 2.Rxb3#
- 1...Rxf2
- 2.Sd2#
- 1...Re3
- 2.Qf8#
- 1...Rf5
- 2.Sc5#
- 1...Se3
- 2.Sc1#
- 1...e3
- 2.Sd4#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);N_PINS(D)::R(A)+S(D)
- R(c);CHECK,OGATE,P_SPINR(c),XS(D)::R(A),XR(c)
- S(a);N_PINS(D)::R(A)+S(D)
- P(d);N_PINS(D)::R(A)+S(D)
- Tries
- Try
- S(G);
- Threat
- R1(E)
- Vars
- K(h);P-FLIGHT::R(E)
- Refutation
- R(c);CHECK,XS(D)
- Try
- S(G);
- Threat
- R1(E)
- Vars
- K(h);P-FLIGHT,XS(G)::R(E)
- Refutation
- R(c);CHECK,P_SPINR(c),XS(D)
- Try
- Q(B);N_SPINS(D),XR(c)
- Threat
- DUALS(6)
- Vars
- P(d);XQ(B)::R(A)+S(D)
- Q(b);::R(A)+S(D)
- S(a);::QAR(B)
- Refutation
- Q(b);P_PINS(D),XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(D)::R(A),XR(c)
- Q(b);::QAR2(B)
- Q(b);::QAR(B)
- R(c);::QAR2(B)
- R(c);::QAR(B)
- Refutation
- S(a);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- R(E)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(D)::R(A),XR(c)
- R(c);N_PINS(D),XQ(B)::R(A)+S(D)
- R(c);OGATE::QAR(B)
- R(c);N_PINS(D)::R(A)+S(D)
- S(a);N_PINS(D)::R(A)+S(D)
- P(d);N_PINS(D)::R(A)+S(D)
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).