MESON Chess Problem Database
Problem Display
PID: 95198 (2K5/2P5/2R3pP/1N3kN1/2R2Pp1/2rP4/2Brb3/BqQ5 w - - 0 1)
Rirakhovski, Abram
Uzbekistanskaya Pravda, 1931
#2
12 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Sd4#
- 1...Rdxc2
- 2.Sd4#
- 1...Rdxd3
- 2.Sd4#
- 1...Rcxc2
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 1...Ra3
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 1...Rb3
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 1...Rcxd3
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 1...Rxc4
- 2.Rf6#
- 1...Rd1
- Tries
- 1.Kb7?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Qxc2
- 2.c8Q#
- 2.c8B#
- 1...Qxa1
- 2.c8Q#
- 2.c8B#
- 1...Qxc1
- 2.c8Q#
- 2.c8B#
- 1...Rdxc2
- 2.c8Q#
- 2.c8B#
- 1...Rdxd3
- 2.c8Q#
- 2.c8B#
- 1...Rcxc2
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rcxd3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rxc4
- 2.Rf6#
- 1...Bxd3
- 2.c8Q#
- 2.c8B#
- 1...g3
- 2.c8Q#
- 2.c8B#
- 1...Qa2
- 2.c8Q#
- 2.c8B#
- 1...Qb2
- 2.c8Q#
- 2.c8B#
- 1...Qb3
- 2.c8Q#
- 2.c8B#
- 1...Qb4
- 2.c8Q#
- 2.c8B#
- 1...Rd1
- 2.c8Q#
- 2.c8B#
- 1...Ra3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rb3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bd1
- 2.c8Q#
- 2.c8B#
- 1...Bf1
- 2.c8Q#
- 2.c8B#
- 1...Bf3
- 2.c8Q#
- 2.c8B#
- 1...Qxb5+!
- threat
- 1.Kb8?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Qxc2
- 2.c8Q#
- 2.c8B#
- 1...Qxa1
- 2.c8Q#
- 2.c8B#
- 1...Qxc1
- 2.c8Q#
- 2.c8B#
- 1...Rdxc2
- 2.c8Q#
- 2.c8B#
- 1...Rdxd3
- 2.c8Q#
- 2.c8B#
- 1...Rcxc2
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rcxd3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rxc4
- 2.Rf6#
- 1...Bxd3
- 2.c8Q#
- 2.c8B#
- 1...g3
- 2.c8Q#
- 2.c8B#
- 1...Qa2
- 2.c8Q#
- 2.c8B#
- 1...Qb2
- 2.c8Q#
- 2.c8B#
- 1...Qb3
- 2.c8Q#
- 2.c8B#
- 1...Qb4
- 2.c8Q#
- 2.c8B#
- 1...Rd1
- 2.c8Q#
- 2.c8B#
- 1...Ra3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rb3
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bd1
- 2.c8Q#
- 2.c8B#
- 1...Bf1
- 2.c8Q#
- 2.c8B#
- 1...Bf3
- 2.c8Q#
- 2.c8B#
- 1...Qxb5+!
- threat
- 1.Bxc3?
- threat
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 1...Qxb5
- 2.Rf6#
- 1...Qb4
- 2.Rf6#
- 1...Bf3
- 2.Sd6#
- 2.Rf6#
- 1...g3!
- threat
- 1.R4c5+?
- 1...Rxc5
- 2.Rf6#
- 1...Kxf4!
- 1...Rxc5
- 1.Kb7?
- Keys
- 1.Kd8!
- threat
- 2.c8Q#
- 2.c8B#
- 1...Rdxd3+
- 2.Sd4#
- 1...Rcxd3+
- 2.Sd6#
- 1...Qxc2
- 2.c8Q#
- 2.c8B#
- 1...Qxa1
- 2.c8Q#
- 2.c8B#
- 1...Qxc1
- 2.c8Q#
- 2.c8B#
- 1...Qxb5
- 2.c8Q#
- 2.c8B#
- 1...Rdxc2
- 2.Sd4#
- 2.c8Q#
- 2.c8B#
- 1...Rcxc2
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rxc4
- 2.Rf6#
- 1...Bxd3
- 2.c8Q#
- 2.c8B#
- 1...g3
- 2.c8Q#
- 2.c8B#
- 1...Qa2
- 2.c8Q#
- 2.c8B#
- 1...Qb2
- 2.c8Q#
- 2.c8B#
- 1...Qb3
- 2.c8Q#
- 2.c8B#
- 1...Qb4
- 2.c8Q#
- 2.c8B#
- 1...Rd1
- 2.Sd4#
- 2.c8Q#
- 2.c8B#
- 1...Ra3
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Rb3
- 2.Sd6#
- 2.R6c5#
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bd1
- 2.c8Q#
- 2.c8B#
- 1...Bf1
- 2.c8Q#
- 2.c8B#
- 1...Bf3
- 2.c8Q#
- 2.c8B#
- threat
- 1.Kd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- R(b);::S(G)
- R(b);XB(C)::S(G)
- R(b);P_SPINR(b),XP(D)::S(G)
- R(d);XR(E)::R1(I)
- Tries
- Try
- K(L);P_SPINS(G),S_FLIGHT
- Threat
- P=Q
- Vars
- Q(a);N_PINS(G),XB(C)::P=Q
- Q(a);N_PINS(G),XB(A)::P=Q
- Q(a);N_PINS(G),XQ(B)::P=Q
- R(b);XB(C)::P=Q
- R(b);P_SPINR(b),XP(D)::P=Q
- R(d);XR(E)::R1(I)
- B(c);P_SPINB(c),XP(D)::P=Q
- P(e);::P=Q
- Q(a);N_PINS(G)::P=Q
- Q(a);::P=Q
- R(b);::P=Q
- B(c);::P=Q
- B(c);P_PINR(I)::P=Q
- Refutation
- Q(a);CHECK,XS(G)
- Try
- K(L);P-FLIGHT,P_SPINS(G)
- Threat
- P=Q
- Vars
- Q(a);N_PINS(G),XB(C)::P=Q
- Q(a);N_PINS(G),XB(A)::P=Q
- Q(a);N_PINS(G),XQ(B)::P=Q
- R(b);XB(C)::P=Q
- R(b);P_SPINR(b),XP(D)::P=Q
- R(d);XR(E)::R1(I)
- B(c);P_SPINB(c),XP(D)::P=Q
- P(e);::P=Q
- Q(a);N_PINS(G)::P=Q
- Q(a);::P=Q
- R(b);::P=Q
- B(c);::P=Q
- Refutation
- Q(a);CHECK,XS(G)
- Try
- B(A);XR(d)
- Threat
- DUALS(3)
- Vars
- Q(a);XS(G)::R1(I)
- Q(a);::R1(I)
- Refutation
- P(e);
- Try
- R(E);CHECK
- Vars
- R(d);XR(E)::R1(I)
- Refutation
- K(f);P-FLIGHT,P_SPINR(b),XP(F)
- Try
- Actual
- K(L);P-FLIGHT,P_SPINP(D)
- Threat
- P=Q
- Vars
- R(b);CHECK,P_SPINR(b),XP(D)::S(G)
- R(d);CHECK,P_SPINR(d),XP(D)::S(G)
- Q(a);XB(C)::P=Q
- Q(a);XB(A)::P=Q
- Q(a);XQ(B)::P=Q
- Q(a);XS(G)::P=Q
- R(d);XR(E)::R1(I)
- B(c);P_SPINB(c),XP(D)::P=Q
- P(e);::P=Q
- Q(a);::P=Q
- B(c);::P=Q
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).