MESON Chess Problem Database
Problem Display
PID: 32380 (5r2/5r2/8/R1N4R/1n1kP1bp/3P4/3P2Q1/nK2B1N1 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
3rd Prize, Vecherni Moskva, 1927
#2
10 + 7
| 20 | De Problemist | 1928 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Se2#
- 1...Be2
- 2.Sxe2#
- 1...Bf3
- 2.Bf2#
- 2.Qf2#
- 1...Bh3
- 2.Se2#
- 1...Bf5
- 2.Sf3#
- 1...Be6
- 2.Se2#
- 1...Bd7
- 2.Se2#
- 1...Bc8
- 2.Se2#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Rf3
- Tries
- 1.Sf3+?
- 1...Bxf3
- 2.Bf2#
- 2.Qg1#
- 2.Qf2#
- 1...Rxf3!
- 1...Bxf3
- 1.Qf3?
- threat
- 2.Se2#
- 2.Bf2#
- 2.Qe3#
- 1...Rxf3
- 2.Se2#
- 1...Bxf3
- 2.Bf2#
- 1...Bxh5
- 2.Se6#
- 1...Sxd3
- 2.Qxd3#
- 1...Rf5
- 2.Se6#
- 1...Sac2
- 2.Se2#
- 2.Sb3#
- 1...Sbc2
- 2.Se2#
- 2.Rd5#
- 1...Sd5
- 2.Se2#
- 2.Rxd5#
- 1...Bf5!
- threat
- 1.Qe2?
- threat
- 2.Qe3#
- 1...Bxe2
- 2.Sxe2#
- 1...Bxh5
- 2.Se6#
- 1...Sxd3
- 2.Qxd3#
- 1...Rf5
- 2.Se6#
- 1...Bf5
- 2.Sf3#
- 1...Sac2
- 2.Sb3#
- 1...Sbc2
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Rf3!
- threat
- 1.Qg3?
- threat
- 2.Qe5#
- 2.Qe3#
- 1...Bxh5
- 2.Se6#
- 1...Sxd3
- 2.Qxd3#
- 1...Rf3
- 2.Se2#
- 2.Qe5#
- 1...Rf4
- 2.Qe3#
- 1...Rf5
- 2.Se6#
- 1...Re7
- 2.Qe3#
- 1...Re8
- 2.Qe3#
- 1...Bf3
- 2.Bf2#
- 2.Qf2#
- 2.Qe5#
- 1...Bf5
- 2.Se2#
- 2.Sf3#
- 2.Bf2#
- 1...Sac2
- 2.Sb3#
- 2.Qe5#
- 1...Sbc2
- 2.Rd5#
- 2.Qe5#
- 2.Qd6#
- 1...Sd5
- 2.Rxd5#
- 2.Qe5#
- 1...Sc6
- 2.Rd5#
- 2.Qd6#
- 2.Qe3#
- 1...hxg3!
- threat
- 1.Sf3+?
- Keys
- 1.Qh3!
- threat
- 2.Qe3#
- 1...Bxh3
- 2.Se2#
- 1...Bxh5
- 2.Se6#
- 1...Sxd3
- 2.Qxd3#
- 1...Rf5
- 2.Se6#
- 1...Bf5
- 2.Sf3#
- 1...Rf3
- 2.Se2#
- 1...Bf3
- 2.Bf2#
- 1...Sac2
- 2.Sb3#
- 1...Sbc2
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- threat
- 1.Qh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(f);S_CUTB(d)::S(C)
- B(d);N_GUARD::S(C),XB(d)
- B(d);N_GUARD::S(C)
- B(d);N_GUARD,S_CUTR(f)::S(C)
- S(b);N_GUARD::R1(J)
- S(b);N_GUARD::R1(J),XS(b)
- Tries
- Try
- S(C);CHECK
- Refutation
- R(f);XS(C)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- R(f);XQ(E)::S(C)
- B(d);XQ(E)::B(B)
- B(d);N_GUARD,XR(J)::S(I)
- S(b);OGATE,XP(F)::QAR1(E),XS(b)
- R(f);S_CUTB(d)::S(I)
- Refutation
- B(d);
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- B(d);XQ(E)::S(C),XB(d)
- B(d);N_GUARD,XR(J)::S(I)
- S(b);OGATE,XP(F)::QAR1(E),XS(b)
- R(f);S_CUTB(d)::S(I)
- B(d);N_GUARD,S_CUTR(f)::S(C)
- S(a);N_GUARD::S(I)
- S(b);N_GUARD::R1(J)
- S(b);N_GUARD::R1(J),XS(b)
- Refutation
- R(f);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(d);N_GUARD,XR(J)::S(I)
- S(b);OGATE,XP(F)::QAR1(E),XS(b)
- R(f);::QAB1(E)
- R(f);S_CUTB(d)::S(I)
- R(g);::QAB1(E)
- Refutation
- P(e);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- QAB1(E)
- Vars
- B(d);N_GUARD,XQ(E)::S(C)
- B(d);N_GUARD,XR(J)::S(I)
- S(b);OGATE,XP(F)::QAR1(E),XS(b)
- R(f);S_CUTB(d)::S(I)
- B(d);N_GUARD,S_CUTR(f)::S(C)
- R(f);S_CUTB(d)::S(C)
- B(d);S_CUTR(f)::B(B)
- S(a);N_GUARD::S(I)
- S(b);N_GUARD::R1(J)
- S(b);N_GUARD::R1(J),XS(b)
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).