MESON Chess Problem Database
Problem Display
PID: 250222 (5R1K/5N1b/rp4kN/8/7p/5B1p/1B4q1/5RQ1 w - - 0 1)
Levman, Semyon Semyonovich
Magyar Sakkvilag, 1927
#2
8 + 7
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg5
- 2.Qxg5#
- 1...Ra1
- 2.Qxb6#
- 1...Ra2
- 2.Qxb6#
- 1...Ra3
- 2.Qxb6#
- 1...Ra4
- 2.Qxb6#
- 1...Ra5
- 2.Qxb6#
- 1...Ra7
- 2.Qxb6#
- 1...Ra8
- 2.Qxb6#
- 1...Bg8
- 2.Rxg8#
- 1...h2
- 2.Qxg2#
- 1...Qxg1
- Tries
- 1.Sf5?
- threat
- 2.Sxh4#
- 2.Se7#
- 1...Qg4
- 2.Qxg4#
- 1...Ra4
- 2.Se7#
- 1...Ra7
- 2.Sxh4#
- 1...Kxf5!
- threat
- 1.Se5+?
- 1...Kg5
- 2.Bc1#
- 2.Qe3#
- 1...Kxh6!
- 1...Kg5
- 1.Bd1?
- threat
- 2.Rf6#
- 1...Qg4
- 2.Qxg4#
- 1...b5!
- threat
- 1.Be2?
- threat
- 2.Rf6#
- 1...Qg4
- 2.Qxg4#
- 1...b5!
- threat
- 1.Rc1?
- threat
- 2.Rc6#
- 1...Qg4
- 2.Qxg4#
- 1...b5!
- threat
- 1.Rd1?
- threat
- 2.Rd6#
- 1...Qg4
- 2.Qxg4#
- 1...b5!
- threat
- 1.Re1?
- threat
- 2.Re6#
- 1...Qg4
- 2.Qxg4#
- 1...b5!
- threat
- 1.Rc8?
- threat
- 2.Rc6#
- 1...Qg4
- 2.Qxg4#
- 1...Ra8
- 2.Qxb6#
- 1...b5!
- threat
- 1.Rd8?
- threat
- 2.Rd6#
- 1...Qg4
- 2.Qxg4#
- 1...Ra8
- 2.Qxb6#
- 1...b5!
- threat
- 1.Re8?
- threat
- 2.Re6#
- 1...Qg4
- 2.Qxg4#
- 1...Ra8
- 2.Qxb6#
- 1...b5!
- threat
- 1.Sf5?
- Keys
- 1.Ra1!
- 1...Qxg1
- 2.Rxg1#
- 1...Rxa1
- 2.Qxb6#
- 1...Qg4
- 2.Qxg4#
- 1...Qg3
- 2.Qb1#
- 1...Qg5
- 2.Qxg5#
- 1...Ra2
- 2.Qxb6#
- 1...Ra3
- 2.Qxb6#
- 1...Ra4
- 2.Qxb6#
- 1...Ra5
- 2.Qxb6#
- 1...Ra7
- 2.Qxb6#
- 1...Ra8
- 2.Qxb6#
- 1...Bg8
- 2.Rxg8#
- 1...h2
- 2.Qxg2#
- 1...b5
- 2.Rxa6#
- 1...Qxg1
- 1.Ra1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATE::QAR1(B),XQ(a)
- R(d);N_GUARD::QAR(B),XP(e)
- R(d);N_GUARD,P_PINR(G)::QAR(B),XP(e)
- B(g);N_GUARD::R(G),XB(g)
- P(b);N_GUARD::QAR(B),XQ(a)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- R(d);::S(E)
- R(d);::S(E),XP(c)
- Refutation
- K(f);N_SPINQ(a),S_FLIGHT,XS(E)
- Try
- S(F);CHECK
- Refutation
- K(f);N_SPINQ(a),P-FLIGHT,XS(E)
- Try
- B(D);
- Threat
- R1(A)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- Refutation
- P(e);
- Try
- B(D);
- Threat
- R1(A)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- Refutation
- P(e);
- Try
- R(A);
- Threat
- R(A)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- Refutation
- P(e);
- Try
- R(A);
- Threat
- R(A)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- Refutation
- P(e);
- Try
- R(A);
- Threat
- R(A)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- Refutation
- P(e);
- Try
- R(G);
- Threat
- R(G)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- R(d);N_GUARD,P_PINR(G)::QAR(B),XP(e)
- Refutation
- P(e);
- Try
- R(G);
- Threat
- R(G)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- R(d);N_GUARD,P_PINR(G)::QAR(B),XP(e)
- Refutation
- P(e);
- Try
- R(G);
- Threat
- R(G)
- Vars
- Q(a);OGATE::QAR2(B),XQ(a)
- R(d);N_GUARD,P_PINR(G)::QAR(B),XP(e)
- Refutation
- P(e);
- Try
- Actual
- R(A);
- Vars
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- R(d);N_GUARD,XR(A)::QAR(B),XP(e)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);N_GUARD::QAB(B)
- Q(a);OGATE::QAR1(B),XQ(a)
- R(d);N_GUARD::QAR(B),XP(e)
- R(d);N_GUARD,P_PINR(G)::QAR(B),XP(e)
- B(g);N_GUARD::R(G),XB(g)
- P(b);N_GUARD::QAR(B),XQ(a)
- P(e);OGATEB::R(A),XR(d)
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).