MESON Chess Problem Database
Problem Display
PID: 6210 (5R2/4p2B/b3R2p/1q2N2K/3N1P2/2P1k3/2Q5/b7 w - - 0 1)
Levman, Semyon Semyonovich
El Ajedrez Espanol, 1928
#2
9 + 6
| 3528 | Bristol Times and Mirror | 1928 |
| 20 | De Problemist | 1928 |
| 3713 | Snap | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Qe2+
- 2.Sg4#
- 1...Qd3
- 2.Sxd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qa4
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Qc4
- 2.Sxc4#
- 2.Sg4#
- 1...Qc6
- 2.Sc4#
- 2.Sg4#
- 2.Sexc6#
- 1...Qd7
- 2.Sc4#
- 2.Sg4#
- 2.Sxd7#
- 1...Qe8+
- 2.Sg6#
- 1...Qb1
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Qb2
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Qb3
- 2.Sc4#
- 2.Sg4#
- 1...Qb4
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qb6
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 1...Qb7
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 1...Qb8
- 2.Sc4#
- 2.Sg4#
- 1...Qf1
- Tries
- 1.Kh4?
- threat
- 2.Sc4#
- 2.Sg4#
- 1...Qxe5
- 2.Rxe5#
- 1...Qe2
- 2.Sd3#
- 2.Sg4#
- 1...Qc4
- 2.Sxc4#
- 2.Sg4#
- 1...Bxc3!
- threat
- 1.Kxh6?
- threat
- 2.Sc4#
- 2.Sg4#
- 1...Qxe5
- 2.Rxe5#
- 1...Qe2
- 2.Sd3#
- 2.Sg4#
- 1...Qc4
- 2.Sxc4#
- 2.Sg4#
- 1...Bxc3!
- threat
- 1.Bd3?
- threat
- 2.Qe2#
- 1...Qe8+
- 2.Sg6#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxd3
- 2.Sxd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qb2
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 1...Bxc3!
- threat
- 1.Rf5?
- threat
- 2.Sc4#
- 2.Sg4#
- 1...Qe2+
- 2.Sg4#
- 1...Qe8+
- 2.Sg6#
- 2.Sf7#
- 1...Qxe5
- 2.Rexe5#
- 1...Qc4
- 2.Sxc4#
- 2.Sg4#
- 1...Bxc3!
- threat
- 1.Qg2?
- threat
- 2.Sc2#
- 1...Qe2+
- 2.Sef3#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qd3
- 2.Sxd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qa4
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sd7#
- 1...Qb1
- 2.Sd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qb2
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sd7#
- 1...Qb3
- 2.Sc4#
- 2.Sg4#
- 1...Qe8+!
- threat
- 1.Kh4?
- Keys
- 1.Qh2!
- threat
- 2.Sc2#
- 1...Qe2+
- 2.Sef3#
- 1...Qe8+
- 2.Sf7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qd3
- 2.Sxd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qa4
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sd7#
- 2.Sf7#
- 1...Qb1
- 2.Sd3#
- 2.Sc4#
- 2.Sg4#
- 1...Qb2
- 2.Sd3#
- 2.Sef3#
- 2.Sc4#
- 2.Sg4#
- 2.Sec6#
- 2.Sd7#
- 2.Sf7#
- 1...Qb3
- 2.Sc4#
- 2.Sg4#
- threat
- 1.Qh2!
This anticipates 73370(1993)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(c);CHECK,N_PINS(E)::R(G)+S(E),DCHECK
- Q(c);CHECK,N_PINS(E)::R(G)+S(E)
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
- Tries
- Try
- K(F);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(c);OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
- Refutation
- B(a);XP(B)
- Try
- K(F);N_SPINS(E),P-FLIGHT,XP(e)
- Threat
- DUALS(2)
- Vars
- Q(c);OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
- Refutation
- B(a);XP(B)
- Try
- B(H);
- Threat
- QAR1(A)
- Vars
- Q(c);CHECK,N_PINS(E)::R(G)+S(E)
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
- Refutation
- B(a);XP(B)
- Try
- R(I);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK::R(G)+S(E),DCHECK
- Q(c);OGATE,P_PINR(I),P_SPINQ(c),XS(E)::R(G),XQ(c)
- Refutation
- B(a);XP(B)
- Try
- Q(A);
- Threat
- S(C)
- Vars
- Q(c);CHECK,N_PINS(E)::R(G)+S(E)
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
- Refutation
- Q(c);CHECK,N_PINS(E)
- Try
- Actual
- Q(A);
- Threat
- S(C)
- Vars
- Q(c);CHECK,N_PINS(E)::R(G)+S(E)
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(G),XQ(c)
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).