MESON Chess Problem Database
Problem Display
PID: 259700 (8/B3Kn2/8/3R2Q1/B1k1b1NR/2p5/N1n5/4q3 w - - 0 1)
Rukhlis, Efim Naumovich
Pravda Vostoka, 1950
(First published on Sat Jun 24 1950)
#2
8 + 6
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bh1+
- 2.Se3#
- 1...Bg2+
- 2.Se3#
- 1...Bd3+
- 2.Se3#
- 1...Bf3+
- 2.Se3#
- 1...Bxd5+
- 2.Se5#
- 1...Bf5+
- 2.Se3#
- 1...Bg6+
- 2.Se3#
- 1...Bh7+
- 2.Se3#
- 1...Sa1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Bh1+
- Tries
- 1.Se3+?
- 1...Sxe3
- 2.Rxe4#
- 2.Rd4#
- 1...Qxe3!
- 1...Sxe3
- 1.Se5+?
- 1...Kxd5
- 2.Bb3#
- 2.Bc6#
- 1...Sxe5!
- 1...Kxd5
- 1.Rd1?
- threat
- 2.Qb5#
- 2.Qc5#
- 1...Bh1+
- 2.Se3#
- 2.Se5#
- 1...Bg2+
- 2.Se3#
- 2.Se5#
- 1...Bd3+
- 2.Se3#
- 1...Bf3+
- 2.Se3#
- 2.Se5#
- 1...Bd5+
- 2.Se3#
- 2.Se5#
- 1...Bf5+
- 2.Se3#
- 2.Se5#
- 1...Bc6+
- 2.Se3#
- 2.Se5#
- 1...Bg6+
- 2.Se3#
- 2.Se5#
- 1...Bb7+
- 2.Se3#
- 2.Se5#
- 1...Bh7+
- 2.Se3#
- 2.Se5#
- 1...Ba8+
- 2.Se3#
- 2.Se5#
- 1...Qxd1
- 2.Qb5#
- 1...Sxg5
- 2.Se5#
- 1...Qd2
- 2.Qb5#
- 1...Qf2
- 2.Qb5#
- 1...Qg1
- 2.Qb5#
- 1...Qe3
- 2.Qb5#
- 1...Sa3
- 2.Rd4#
- 2.Qc5#
- 1...Sd4
- 2.Rxd4#
- 2.Qc5#
- 1...Se5
- 2.Sxe5#
- 1...Sd6
- 2.Se5#
- 2.Qc5#
- 1...Qxh4!
- threat
- 1.Rd2?
- threat
- 2.Qb5#
- 2.Qc5#
- 1...Bh1+
- 2.Se3#
- 2.Se5#
- 1...Bg2+
- 2.Se3#
- 2.Se5#
- 1...Bd3+
- 2.Se3#
- 1...Bf3+
- 2.Se3#
- 2.Se5#
- 1...Bd5+
- 2.Se3#
- 2.Se5#
- 1...Bf5+
- 2.Se3#
- 2.Se5#
- 1...Bc6+
- 2.Se3#
- 2.Se5#
- 1...Bg6+
- 2.Se3#
- 2.Se5#
- 1...Bb7+
- 2.Se3#
- 2.Se5#
- 1...Bh7+
- 2.Se3#
- 2.Se5#
- 1...Ba8+
- 2.Se3#
- 2.Se5#
- 1...Qxd2
- 2.Qb5#
- 1...Sxg5
- 2.Se5#
- 1...cxd2
- 2.Qb5#
- 1...Qf2
- 2.Qb5#
- 1...Qb1
- 2.Qc5#
- 1...Qg1
- 2.Qb5#
- 1...Qe3
- 2.Qb5#
- 1...Sa3
- 2.Rd4#
- 2.Qc5#
- 1...Sd4
- 2.Rxd4#
- 2.Qc5#
- 1...Se5
- 2.Sxe5#
- 1...Sd6
- 2.Se5#
- 2.Qc5#
- 1...Qxh4!
- threat
- 1.Rc5+?
- 1...Kd4
- 2.Rxc3#
- 1...Kd3!
- 1...Kd4
- 1.Se3+?
- Keys
- 1.Rd3!
- threat
- 2.Qb5#
- 1...Bh1+
- 2.Se5#
- 1...Bg2+
- 2.Se5#
- 1...Bxd3+
- 2.Se3#
- 1...Bf3+
- 2.Se5#
- 1...Bd5+
- 2.Se5#
- 1...Bf5+
- 2.Se5#
- 1...Bc6+
- 2.Se5#
- 1...Bg6+
- 2.Se5#
- 1...Bb7+
- 2.Se5#
- 1...Bh7+
- 2.Se5#
- 1...Ba8+
- 2.Se5#
- 1...Kxd3
- 2.Bb5#
- 1...Qxh4
- 2.Rxc3#
- 1...Sxg5
- 2.Se5#
- 1...Qb1
- 2.Rxc3#
- 1...Sa3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Se5
- 2.Sxe5#
- 1...Sd6
- 2.Se5#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- B(e);CHECK::R(D)+S(C),DCHECK
- B(e);CHECK,SBLOCK,XR(E)::R(D)+S(C),DCHECK
- S(b);N_GUARD::R1(E)
- S(b);N_GUARD::R1(E),XS(b)
- Tries
- Try
- S(C);CHECK,P_PINB(e)
- Refutation
- Q(a);XS(C)
- Try
- S(C);CHECK,P_PINB(e)
- Refutation
- S(f);XS(C)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK::R(D)+S(C),DCHECK
- Q(a);XR(E)::QAB1(F)
- S(f);N_GUARD,XQ(F)::S(C)
- Q(a);::QAB1(F)
- S(f);N_GUARD::S(C),XS(f)
- Refutation
- Q(a);P_PINQ(F),XR(D)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK::R(D)+S(C),DCHECK
- Q(a);XR(E)::QAB1(F)
- S(f);N_GUARD,XQ(F)::S(C)
- P(c);XR(E)::QAB1(F)
- Q(a);::QAB1(F)
- Q(a);::QAR1(F)
- S(f);N_GUARD::S(C),XS(f)
- Refutation
- Q(a);P_PINQ(F),XR(D)
- Try
- R(E);CHECK
- Vars
- K(d);OGATE,P-FLIGHT::B(G)+R(E),XP(c)
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- R(E);
- Threat
- QAB1(F)
- Vars
- B(e);CHECK::R(D)+S(C),DCHECK
- B(e);CHECK,SBLOCK,XR(E)::R(D)+S(C),DCHECK
- K(d);N_GUARD,S_FLIGHT,XR(E)::B(B)
- Q(a);N_GUARD,P_PINQ(F),XR(D)::R1(E),XP(c)
- S(f);N_GUARD,XQ(F)::S(C)
- Q(a);N_GUARD::R1(E),XP(c)
- S(b);N_GUARD::R1(E)
- S(b);N_GUARD::R1(E),XS(b)
- S(f);N_GUARD::S(C),XS(f)
- S(f);N_GUARD::S(C)
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).