MESON Chess Problem Database
Problem Display
PID: 228959 (8/4p2b/7b/4R3/p1k1pnp1/K1N3r1/7p/1NRQ2nr w - - 0 1)
Levman, Semyon Semyonovich
2/3 Prize, 64 Shakhmatnoe obozrenie, 1926
#2
6 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.Se2#
- 1...Rxc3+
- 2.Rxc3#
- 1...Rd3
- 2.Qxa4#
- 1...Sf3
- 2.Sa2#
- 2.Se2#
- 2.Sxa4#
- 2.Sxe4#
- 2.Sb5#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sh3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...e3
- 2.Se4#
- 1...Rg2
- Tries
- 1.Rd5?
- threat
- 2.Sd2#
- 2.Qxa4#
- 2.Qd4#
- 1...Rxc3+
- 2.Rxc3#
- 1...Sxd5
- 2.Qxd5#
- 1...Rg2
- 2.Se2#
- 2.Qxa4#
- 2.Qd4#
- 1...Rd3
- 2.Qxa4#
- 1...Bg7
- 2.Sd2#
- 2.Qxa4#
- 1...Sge2
- 2.Sd2#
- 2.Qxa4#
- 1...Sf3
- 2.Sa2#
- 2.Se2#
- 2.Sxa4#
- 2.Sxe4#
- 2.Sb5#
- 2.Qxa4#
- 1...Sfe2
- 2.Qxa4#
- 1...Sg2
- 2.Qxa4#
- 2.Qd4#
- 1...Sfh3
- 2.Qxa4#
- 2.Qd4#
- 1...Sh5
- 2.Qxa4#
- 2.Qd4#
- 1...Se6
- 2.Qxa4#
- 1...Sg6
- 2.Qxa4#
- 2.Qd4#
- 1...e3
- 2.Se4#
- 2.Qxa4#
- 2.Qd4#
- 1...e5
- 2.Sd2#
- 2.Qxa4#
- 1...Sd3!
- threat
- 1.Qd6?
- threat
- 2.Sd2#
- 2.Rc5#
- 1...Rxc3+
- 2.Rxc3#
- 1...Sd5
- 2.Qxd5#
- 1...Rg2
- 2.Se2#
- 2.Rc5#
- 1...Rd3
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...Sf3
- 2.Sd1#
- 2.Rc5#
- 1...Sfe2
- 2.Rc5#
- 2.Qd5#
- 1...Sg2
- 2.Rc5#
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sfh3
- 2.Rc5#
- 2.Qd5#
- 1...Sh5
- 2.Rc5#
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Rxe4#
- 2.Rc5#
- 2.Qd5#
- 1...e3
- 2.Se4#
- 2.Rc5#
- 1...exd6!
- threat
- 1.Qd8?
- threat
- 2.Sd2#
- 1...Rxc3+
- 2.Rxc3#
- 1...Sd5
- 2.Qxd5#
- 1...Rg2
- 2.Se2#
- 1...Sf3
- 2.Sd1#
- 1...Sfe2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sfh3
- 2.Qd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...e3
- 2.Se4#
- 1...Rd3!
- threat
- 1.Rd5?
- Keys
- 1.Qd7!
- threat
- 2.Sd2#
- 1...Rxc3+
- 2.Rxc3#
- 1...Sd5
- 2.Qxd5#
- 1...Rg2
- 2.Se2#
- 1...Rd3
- 2.Qxa4#
- 1...Sf3
- 2.Sd1#
- 1...Sfe2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd3
- 2.Qd5#
- 1...Sfh3
- 2.Qd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...e3
- 2.Se4#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(d);N_PINS(E)::R(B)+S(E)
- R(d);CHECK,OGATE,P_SPINR(d),XS(E)::R1(B),XR(d)
- R(d);SBLOCK::QAR2(C),XP(e)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- P(g);N_PINS(E)::R(B)+S(E)
- Tries
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- R(d);CHECK,OGATE,P_SPINR(d),XS(E)::R1(B),XR(d)
- S(h);OGATE,XR(F)::QAB1(C),XS(h)
- R(d);::QAR2(C),XP(e)
- S(h);::QAR2(C),XP(e)
- Refutation
- S(h);N_PINS(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,OGATE,P_SPINR(d),XS(E)::R1(B),XR(d)
- S(h);N_GUARD::QAB1(C),XS(h)
- S(h);N_GUARD,N_PINS(E)::QAB1(C)
- S(h);N_GUARD::QAB1(C)
- Refutation
- P(k);XQ(C)
- Try
- Q(C);
- Threat
- S(A)
- Vars
- R(d);CHECK,OGATE,P_SPINR(d),XS(E)::R1(B),XR(d)
- S(h);N_GUARD::QAB1(C),XS(h)
- R(d);N_PINS(E)::R(B)+S(E)
- S(a);N_PINS(E)::R(B)+S(E)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD,N_PINS(E)::QAB1(C)
- P(g);N_PINS(E)::R(B)+S(E)
- Refutation
- R(d);
- Try
- Actual
- Q(C);
- Threat
- S(A)
- Vars
- R(d);CHECK,OGATE,P_SPINR(d),XS(E)::R1(B),XR(d)
- S(h);N_GUARD::QAB1(C),XS(h)
- R(d);N_PINS(E)::R(B)+S(E)
- R(d);SBLOCK::QAR2(C),XP(e)
- S(a);N_PINS(E)::R(B)+S(E)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD,N_PINS(E)::QAB1(C)
- P(g);N_PINS(E)::R(B)+S(E)
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).