MESON Chess Problem Database
Problem Display
PID: 173077 (4rrB1/3R1n2/2p5/1p4p1/npk2pQ1/1N6/3BR3/b1N1K3 w - - 0 1)
Barulin, Mikhail Mikhailovich
1st Prize, 64 Shakhmatnoe obozrenie, 1926
#2
8 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2+
- 2.Qxe2#
- 1...Re6
- 2.Qxe6#
- 1...Ra8
- 2.Qe6#
- 1...Rb8
- 2.Qe6#
- 1...Rc8
- 2.Qe6#
- 1...Rd8
- 2.Qe6#
- 1...Bd4
- 2.Rxd4#
- 1...Sb2
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...c5
- 2.Sa5#
- 1...Rxe2+
- Tries
- 1.Bxf7+?
- 1...Re6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rxf7!
- 1...Re6
- 1.Re3?
- threat
- 2.Qe2#
- 1...Sb2
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...Rxe3+!
- threat
- 1.Re4+?
- 1...Bd4
- 2.Rxd4#
- 2.Qe2#
- 1...Rxe4+!
- 1...Bd4
- 1.Re5?
- threat
- 2.Sa5#
- 2.Qe2#
- 1...Bxe5
- 2.Qe2#
- 1...Ra8
- 2.Qe2#
- 2.Qe6#
- 1...Sb2
- 2.Sa5#
- 2.Rd4#
- 1...Sc3
- 2.Sa5#
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...Rxe5+!
- threat
- 1.Ree7?
- threat
- 2.Qe2#
- 2.Qe6#
- 1...Sb2
- 2.Rd4#
- 2.Qe6#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...Sb6
- 2.Qe2#
- 1...Rxe7+!
- threat
- 1.Rxe8?
- threat
- 2.Qe2#
- 2.Qe6#
- 1...Sb2
- 2.Rd4#
- 2.Re4#
- 2.Qe6#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...Sb6
- 2.Qe2#
- 1...Rxe8+!
- threat
- 1.Qf3?
- threat
- 2.Qd3#
- 1...Rxe2+
- 2.Qxe2#
- 1...Sb2
- 2.Rd4#
- 2.Qxc6#
- 1...Sc5
- 2.Sa5#
- 1...Re3!
- threat
- 1.Qf5?
- threat
- 2.Sa5#
- 2.Qd3#
- 1...Re3
- 2.Sa5#
- 1...Re4
- 2.Sa5#
- 1...Re5
- 2.Qd3#
- 1...Ra8
- 2.Qd3#
- 2.Qe6#
- 1...Be5
- 2.Qd3#
- 1...Sb2
- 2.Sa5#
- 2.Rd4#
- 2.Qc2#
- 2.Qc5#
- 1...Sc5
- 2.Sa5#
- 2.Qxc5#
- 1...Rxe2+!
- threat
- 1.Bxf7+?
- Keys
- 1.Re6!
- threat
- 2.Qe2#
- 1...Rxe6+
- 2.Qxe6#
- 1...Sd6
- 2.Re4#
- 1...Sb2
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Sa5#
- 1...Se5
- 2.Rxc6#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(j);CHECK,OGATE,XR(D)::QAB(F),XR(j)
- R(j);N_GUARD,N_SPINS(i)::QAB(F),XR(j)
- R(j);N_GUARD,N_PINR(D)::QAB(F)
- B(a);N_GUARD,N_SPINP(e)::R1(G),XB(a)
- S(b);S_CUTB(a)::R1(G)
- S(b);SBLOCK::S(E)
- P(h);SBLOCK::S(E)
- Tries
- Try
- B(H);CHECK,XS(i)
- Refutation
- R(k);XB(H)
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- S(b);S_CUTB(a)::R1(G)
- S(b);SBLOCK::S(E)
- Refutation
- R(j);CHECK,XR(D)
- Try
- R(D);CHECK,N_PINP(e)
- Refutation
- R(j);CHECK,XR(D)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(a);XR(D)::QAB(F)
- S(b);::S(E)
- Refutation
- R(j);CHECK,XR(D)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- S(b);S_CUTB(a)::R1(G)
- S(b);SBLOCK::S(E)
- S(b);::QAB(F)
- Refutation
- R(j);CHECK,XR(D)
- Try
- R(D);N_SPINR(D),XR(j)
- Threat
- DUALS(2)
- Vars
- S(b);S_CUTB(a)::R1(G)
- S(b);SBLOCK::S(E)
- S(b);::QAB(F)
- Refutation
- R(k);CHECK,XR(D)
- Try
- Q(F);N_PINP(e)
- Threat
- QAB1(F)
- Vars
- R(j);CHECK,OGATE,XR(D)::QAB(F),XR(j)
- S(b);SBLOCK::S(E)
- Refutation
- R(j);
- Try
- Q(F);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- R(j);::S(E)
- R(j);::QAB1(F)
- B(a);N_PINR(D)::QAB1(F)
- Refutation
- R(j);CHECK,XR(D)
- Try
- Actual
- R(D);N_PINS(i)
- Threat
- QAB(F)
- Vars
- R(j);CHECK,OGATE,XR(D)::QAB(F),XR(j)
- S(i);::B(H)+R(D),DCHECK
- S(b);S_CUTB(a)::R1(G)
- S(b);SBLOCK::S(E)
- S(i);N_PINR(D)::B(H)+R(D),DCHECK,XP(h)
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).