MESON Chess Problem Database
Problem Display
PID: 259559 (3R4/6b1/4K3/3N2N1/3kp3/2R3Q1/q7/3nn3 w - - 0 1)
Rukhlis, Efim Naumovich
Pravda Vostoka, 1948
(First published on Sun Feb 15 1948)
#2
6 + 6
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qa1
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qb2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qc2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qd2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qe2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qf2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qg2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qa3
- 2.Sb4#
- 1...Qa6+
- 2.Sb6#
- 1...Qa7
- 2.Sc7#
- 1...Be5
- 2.Qxe5#
- 1...Bh6
- 2.Qe5#
- 1...Bf8
- 2.Qe5#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sxc3
- 2.Qxc3#
- 1...Se3
- 2.Qxe3#
- 1...e3
- 2.Qf4#
- 2.Qh4#
- 2.Qg4#
- 1...Qb1
- Tries
- 1.Kf5?
- threat
- 2.Se6#
- 1...Qf2+
- 2.Sf4#
- 1...Se3+
- 2.Qxe3#
- 1...Sxc3
- 2.Qxc3#
- 1...Qa6
- 2.Sb6#
- 1...Qxd5+!
- threat
- 1.Sf3+?
- 1...exf3
- 2.Qf4#
- 2.Qh4#
- 2.Qg4#
- 1...Sxf3!
- 1...exf3
- 1.Qxe1?
- threat
- 2.Qxe4#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qa6+
- 2.Sb6#
- 1...Sxc3
- 2.Qxc3#
- 1...Qb1
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qc2
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qe2
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Qg2
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Se7#
- 1...Sf2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...e3
- 2.Qh4#
- 1...Qc4!
- threat
- 1.Qc7?
- threat
- 2.Qb6#
- 2.Qc5#
- 2.Qxg7#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qa6+
- 2.Sb6#
- 1...Sxc3
- 2.Qxc3#
- 1...Bf6
- 2.Qb6#
- 2.Qc5#
- 1...Qb1
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Qc4#
- 2.Qc5#
- 2.Qxg7#
- 1...Qb3
- 2.Qc5#
- 2.Qxg7#
- 1...Qc4
- 2.Qxc4#
- 1...Qb2
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Qc4#
- 2.Qc5#
- 2.Qxg7#
- 1...Qf2
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Qb6#
- 2.Qc4#
- 2.Qc5#
- 2.Qa7#
- 1...Qh2
- 2.Sf4#
- 2.Qb6#
- 2.Qc4#
- 2.Qc5#
- 2.Qa7#
- 1...Qa3
- 2.Sb4#
- 2.Qc4#
- 2.Qxg7#
- 1...Qa5
- 2.Qc4#
- 2.Qxg7#
- 1...Qa7
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Qc4#
- 2.Qxa7#
- 1...Be5
- 2.Qxe5#
- 2.Qb6#
- 2.Qc5#
- 1...Bh6
- 2.Qe5#
- 2.Qb6#
- 2.Qc5#
- 1...Bf8
- 2.Qe5#
- 1...Bh8
- 2.Qb6#
- 2.Qc5#
- 1...Sf3
- 2.Qb6#
- 2.Qc5#
- 1...Sd3!
- threat
- 1.Kf5?
- Keys
- 1.Kf7!
- threat
- 2.Se6#
- 1...Qf2+
- 2.Sf6#
- 1...Qa7+
- 2.Sc7#
- 1...Sxc3
- 2.Qxc3#
- 1...Qa6
- 2.Sb6#
- 1...e3
- 2.Qf4#
- threat
- 1.Kf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::R1(F),XQ(c)
- Q(c);N_PINS(C)::R(F)+S(C)
- Q(c);CHECK,N_PINS(C)::R(F)+S(C)
- B(f);N_GUARD::QAB1(B),XB(f)
- B(f);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B)
- S(a);OGATE,XR(A)::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B),XS(a)
- Tries
- Try
- K(E);N_SPINS(C),S_FLIGHT
- Threat
- S(D)
- Vars
- Q(c);CHECK,N_GUARD::R(F)+S(C)
- S(a);CHECK,N_GUARD::QAB1(B),XS(a)
- S(a);OGATE,XR(A)::QAB1(B),XS(a)
- Q(c);N_GUARD::R(F)+S(C)
- Refutation
- Q(c);CHECK,P_SPINQ(c),XS(C)
- Try
- S(D);CHECK
- Refutation
- S(b);XS(D)
- Try
- Q(B);XS(b)
- Threat
- QAR1(B),XP(e)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::R1(F),XQ(c)
- Q(c);CHECK,N_PINS(C)::R(F)+S(C)
- S(a);OGATE,XR(A)::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(e);OGATEB::QAR(B)
- Refutation
- Q(c);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::R1(F),XQ(c)
- Q(c);CHECK,N_PINS(C)::R(F)+S(C)
- S(a);OGATE,XR(A)::QAB1(B),XS(a)
- Q(c);N_GUARD::QAR1(B),XQ(c)
- B(f);N_GUARD::QAB1(B)
- Refutation
- S(b);
- Try
- Actual
- K(E);S_FLIGHT
- Threat
- S(D)
- Vars
- Q(c);CHECK,N_PINS(C)::R(F)+S(C)
- S(a);OGATE,XR(A)::QAB1(B),XS(a)
- Q(c);N_PINS(C)::R(F)+S(C)
- P(e);OGATEB::QAR2(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).