MESON Chess Problem Database
Problem Display
PID: 18693 (8/N1Kp4/8/pN3Q1q/pkBPr3/R1R3p1/8/8 w - - 0 1)
Loshinski, Lev Ilich
1st HM., Frankenthal Chess Club, 1957
#2
8 + 7
| 3713 | Snap | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qc5#
- 1...Qe2
- 2.Qc5#
- 1...Qf3
- 2.Qc5#
- 1...Qg4
- 2.Qc5#
- 1...Qg6
- 2.Qc5#
- 1...Qf7
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- 1...Qh1
- 2.Qc5#
- 1...Qh2
- 2.Qc5#
- 1...Qh3
- 2.Qc5#
- 1...Qh4
- 2.Qc5#
- 1...Qh6
- 2.Qc5#
- 1...Qh7
- 2.Qc5#
- 1...Qh8
- 2.Qc5#
- 1...Re3
- 2.Qb1#
- 1...Rf4
- 2.Qb1#
- 1...Rg4
- 2.Qb1#
- 1...Rh4
- 2.Qb1#
- 1...Re5
- 2.Qb1#
- 1...Re6
- 2.Qb1#
- 1...Re7
- 2.Qb1#
- 1...Re8
- 2.Qb1#
- 1...d5
- 2.Sc6#
- 1...d6
- 2.Sc6#
- 1...Qd1
- Tries
- 1.Bf1?
- threat
- 2.Rc4#
- 1...Rxd4
- 2.Qb1#
- 1...Qe2
- 2.Qc5#
- 1...Qf7
- 2.Qc5#
- 1...d5
- 2.Sc6#
- 1...Re2!
- threat
- 1.Ba2?
- threat
- 2.Rc4#
- 1...Rxd4
- 2.Qb1#
- 1...Qe2
- 2.Qc5#
- 1...Qf7
- 2.Qc5#
- 1...d5!
- threat
- 1.Be2?
- threat
- 2.Rc4#
- 1...Qxe2
- 2.Qc5#
- 1...Rxd4
- 2.Qb1#
- 1...Qf7
- 2.Qc5#
- 1...d5
- 2.Sc6#
- 1...Rxe2!
- threat
- 1.Bb3?
- threat
- 2.Rxa4#
- 2.Rc4#
- 1...Rxd4
- 2.Rxa4#
- 1...Qe2
- 2.Rxa4#
- 2.Qc5#
- 1...Qf7
- 2.Rxa4#
- 2.Qc5#
- 1...d5
- 2.Rxa4#
- 1...axb3!
- threat
- 1.Bd3?
- threat
- 2.Rc4#
- 1...Qf7
- 2.Qc5#
- 1...d5
- 2.Sc6#
- 1...Rxd4!
- threat
- 1.Bd5?
- threat
- 2.Rc4#
- 1...Rxd4
- 2.Qb1#
- 1...Qe2!
- threat
- 1.Bf7?
- threat
- 2.Rc4#
- 1...Qxf7
- 2.Qc5#
- 1...Rxd4
- 2.Qb1#
- 1...Qe2
- 2.Qc5#
- 1...Re6
- 2.Qb1#
- 1...d5!
- threat
- 1.Bg8?
- threat
- 2.Rc4#
- 1...Rxd4
- 2.Qb1#
- 1...Qe2
- 2.Qc5#
- 1...Qf7
- 2.Qc5#
- 1...Re6
- 2.Qb1#
- 1...d5!
- threat
- 1.Qf8+?
- 1...Qc5+
- 2.Qxc5#
- 1...d6
- 2.Sc6#
- 1...Re7!
- 1...Qc5+
- 1.Bf1?
- Keys
- 1.Be6!
- threat
- 2.Rc4#
- 1...Rxd4
- 2.Qb1#
- 1...Rxe6
- 2.Qb1#
- 1...dxe6
- 2.Sc6#
- 1...Qe2
- 2.Qc5#
- 1...d5
- 2.Qf8#
- threat
- 1.Be6!
This anticipates 146679(1993)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(f);N_GUARD::QAB1(F)
- R(d);OGATE::QAR(F)
- P(g);N_GUARD::S(G)
- Tries
- Try
- B(C);
- Threat
- R1(B)
- Vars
- R(d);OGATE,XP(D)::QAR(F)
- Q(f);N_GUARD::QAB1(F)
- P(g);N_GUARD::S(G)
- Refutation
- R(d);
- Try
- B(C);
- Threat
- R1(B)
- Vars
- R(d);OGATE,XP(D)::QAR(F)
- Q(f);N_GUARD::QAB1(F)
- Refutation
- P(g);
- Try
- B(C);
- Threat
- R1(B)
- Vars
- Q(f);N_GUARD,XB(C)::QAB1(F)
- R(d);OGATE,XP(D)::QAR(F)
- Q(f);N_GUARD::QAB1(F)
- P(g);N_GUARD::S(G)
- Refutation
- R(d);XB(C)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);XP(D)::R1(A),XP(b)
- P(g);::R1(A),XP(b)
- Refutation
- P(b);XB(C)
- Try
- B(C);
- Threat
- R1(B)
- Vars
- Q(f);N_GUARD::QAB1(F)
- P(g);N_GUARD::S(G)
- Refutation
- R(d);XP(D)
- Try
- B(C);
- Threat
- R1(B)
- Vars
- R(d);OGATE,XP(D)::QAR(F)
- Refutation
- Q(f);
- Try
- B(C);
- Threat
- R1(B)
- Vars
- Q(f);N_GUARD,XB(C)::QAB1(F)
- R(d);OGATE,XP(D)::QAR(F)
- Q(f);N_GUARD::QAB1(F)
- R(d);OGATE::QAR(F)
- Refutation
- P(g);
- Try
- B(C);
- Threat
- R1(B)
- Vars
- R(d);OGATE,XP(D)::QAR(F)
- Q(f);N_GUARD::QAB1(F)
- R(d);OGATE::QAR(F)
- Refutation
- P(g);
- Try
- Q(F);CHECK
- Vars
- Q(f);CHECK,N_GUARD,P_SPINQ(f)::QAB1(F),XQ(f)
- P(g);P_SPINP(g)::S(G)
- Refutation
- R(d);P_SPINR(d)
- Try
- Actual
- B(C);
- Threat
- R1(B)
- Vars
- R(d);OGATE,XP(D)::QAR(F)
- R(d);OGATE,XB(C)::QAR(F)
- P(g);N_GUARD,XB(C)::S(G)
- Q(f);N_GUARD::QAB1(F)
- P(g);N_GUARD,S_CUTQ(f)::QAB(F)
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).