MESON Chess Problem Database
Problem Display
PID: 173067 (nB1n3Q/5rR1/4p1q1/R2B1b2/1P1k4/NK1pr2p/3N1P2/4b3 w - - 0 1)
Barulin, Mikhail Mikhailovich
4th Prize, Vecherni Izvestiya, 1930
#2
10 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Rg4#
- 1...Qh7
- 2.Rg4#
- 1...Qg1
- 2.Rg4#
- 1...Qg2
- 2.Rg4#
- 1...Qg3
- 2.Rg4#
- 1...Qg4
- 2.Rxg4#
- 1...Qh6
- 2.Rg4#
- 1...Re2
- 2.Sf3#
- 1...Rf3
- 2.Sxf3#
- 1...Re4
- 2.Sf3#
- 1...Re5
- 2.Sf3#
- 1...exd5
- 2.Sb5#
- 1...Qh5
- Tries
- 1.Bg2?
- threat
- 2.Sb5#
- 1...Qxg2
- 2.Rg4#
- 1...Rf3
- 2.Be5#
- 1...Re4
- 2.Sf3#
- 1...Re5
- 2.Bxe5#
- 1...Rb7
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Be4
- 2.Be5#
- 1...Sc7
- 2.Ba7#
- 1...hxg2!
- threat
- 1.Bf3?
- threat
- 2.Sb5#
- 1...Rxf3
- 2.Be5#
- 1...Re5
- 2.Bxe5#
- 1...Rb7
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Be4
- 2.Be5#
- 1...Sc7
- 2.Ba7#
- 1...Re4!
- threat
- 1.Bc4?
- threat
- 2.Sb5#
- 1...Re5
- 2.Bxe5#
- 1...Rb7
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Sc7
- 2.Ba7#
- 1...Bxd2!
- threat
- 1.Be4?
- threat
- 2.Sb5#
- 2.Be5#
- 1...Qxg7
- 2.Sb5#
- 1...Rxe4
- 2.Sf3#
- 1...Bxe4
- 2.Be5#
- 1...Qg3
- 2.Sb5#
- 1...Qf6
- 2.Sb5#
- 1...Rb7
- 2.Be5#
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Sc7
- 2.Ba7#
- 1...Sc6
- 2.Sb5#
- 1...e5
- 2.Sb5#
- 2.Bxe5#
- 2.Rd5#
- 1...Bxd2!
- threat
- 1.Bc6?
- threat
- 2.Sb5#
- 1...Re5
- 2.Sf3#
- 2.Bxe5#
- 1...Rb7
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Sc7
- 2.Ba7#
- 1...Sxc6!
- threat
- 1.Be5+?
- 1...Rxe5
- 2.Sf3#
- 1...Kxe5!
- 1...Rxe5
- 1.Bg2?
- Keys
- 1.Bh1!
- threat
- 2.Sb5#
- 1...Qg2
- 2.Rg4#
- 1...Rf3
- 2.Be5#
- 1...Re4
- 2.Sf3#
- 1...Re5
- 2.Bxe5#
- 1...Rb7
- 2.Rd7#
- 1...Rc7
- 2.Rd7#
- 1...Be4
- 2.Be5#
- 1...Sc7
- 2.Ba7#
- threat
- 1.Bh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- Q(h);OGATE::QAB(J)+R(H),DCHECK
- Q(h);OGATE::QAB(J)+R(H),DCHECK,XQ(h)
- R(c);N_GUARD::S(A)
- R(c);N_GUARD::S(A),XR(c)
- P(g);SBLOCK,XB(G)::S(C)
- Tries
- Try
- B(G);
- Threat
- S(C)
- Vars
- Q(h);OGATE,XB(G)::QAB(J)+R(H),DCHECK
- R(c);N_GUARD::B(I)
- R(c);N_GUARD,SBLOCK::S(A)
- R(c);N_GUARD::B(I),XR(c)
- R(i);OGATE,P_PINP(E)::QAB(J)+R(H),DCHECK
- R(i);OGATE::QAB(J)+R(H),DCHECK
- B(f);S_CUTR(c)::B(I)
- S(j);N_GUARD,S_CUTR(i)::B(I)
- Refutation
- P(d);XB(G)
- Try
- B(G);
- Threat
- S(C)
- Vars
- R(c);N_GUARD,XB(G)::B(I)
- R(c);N_GUARD::B(I),XR(c)
- R(i);OGATE,P_PINP(E)::QAB(J)+R(H),DCHECK
- R(i);OGATE::QAB(J)+R(H),DCHECK
- B(f);S_CUTR(c)::B(I)
- S(j);N_GUARD,S_CUTR(i)::B(I)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- S(C)
- Vars
- R(c);N_GUARD::B(I),XR(c)
- R(i);OGATE,P_PINP(E)::QAB(J)+R(H),DCHECK
- R(i);OGATE::QAB(J)+R(H),DCHECK
- S(j);N_GUARD,S_CUTR(i)::B(I)
- Refutation
- B(a);XS(A)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(h);P_SPINQ(h),XR(H)::S(C)
- R(c);N_GUARD,SBLOCK,XB(G)::S(A)
- B(f);XB(G)::B(I)
- Q(h);::S(C)
- R(i);OGATE::QAB(J)+R(H),DCHECK
- S(j);N_GUARD,S_CUTR(i)::B(I)
- S(k);::S(C)
- Refutation
- B(a);XS(A)
- Try
- B(G);
- Threat
- S(C)
- Vars
- R(i);OGATE,P_PINP(E)::QAB(J)+R(H),DCHECK
- R(i);OGATE::QAB(J)+R(H),DCHECK
- S(j);N_GUARD,S_CUTR(i)::B(I)
- Refutation
- S(k);XB(G)
- Try
- B(I);CHECK
- Vars
- R(c);XB(I)::S(A)
- Refutation
- K(e);S_FLIGHT,XB(I)
- Try
- Actual
- B(G);
- Threat
- S(C)
- Vars
- Q(h);OGATE::QAB(J)+R(H),DCHECK
- R(c);N_GUARD::B(I)
- R(c);N_GUARD,SBLOCK::S(A)
- R(c);N_GUARD::B(I),XR(c)
- R(i);OGATE,P_PINP(E)::QAB(J)+R(H),DCHECK
- R(i);OGATE::QAB(J)+R(H),DCHECK
- B(f);S_CUTR(c)::B(I)
- S(j);N_GUARD,S_CUTR(i)::B(I)
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).