MESON Chess Problem Database
Problem Display
PID: 235534 (2bQ3B/b1n5/2B3r1/R7/4nk2/2p1pP2/5P2/K3N1R1 w - - 0 1)
Ellerman, Arnoldo
Shakhmaty v SSSR, 1946
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Rg4#
- 2.Qh4#
- 1...Bf5
- 2.Be5#
- 1...Sd2
- 2.Sd3#
- 1...Sg3
- 2.Sg2#
- 2.Sd3#
- 1...Sg5
- 2.Sg2#
- 2.Sd3#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Sd3#
- 2.Qxc7#
- 2.Qd6#
- 1...Re6
- Tries
- 1.Bxe4?
- threat
- 2.Sd3#
- 2.Be5#
- 1...Rxg1
- 2.Be5#
- 2.Qxc7#
- 2.Qd6#
- 1...Rg5
- 2.Sd3#
- 2.Qxg5#
- 1...Rd6
- 2.Sg2#
- 2.Be5#
- 2.Qg5#
- 2.Qxd6#
- 1...Re6
- 2.Sg2#
- 2.Sd3#
- 2.Rg4#
- 2.Rf5#
- 2.Qh4#
- 2.Qg5#
- 1...Rf6
- 2.Sg2#
- 2.Sd3#
- 1...Rg7
- 2.Sd3#
- 2.Qd6#
- 1...Bd4
- 2.Sd3#
- 1...Bc5
- 2.Sd3#
- 1...Ba6
- 2.Be5#
- 2.Rf5#
- 1...Sb5
- 2.Sd3#
- 1...Sd5
- 2.Sd3#
- 1...exf2!
- threat
- 1.Qg5+?
- 1...Sxg5
- 2.Sg2#
- 2.Sd3#
- 1...Rxg5!
- 1...Sxg5
- 1.Qf6+?
- 1...Bf5
- 2.Rxf5#
- 2.Qe5#
- 2.Qxf5#
- 1...Sxf6
- 2.Sd3#
- 1...Rxf6!
- 1...Bf5
- 1.Qxc7+?
- 1...Sd6
- 2.Sd3#
- 1...Rd6!
- 1...Sd6
- 1.Qd4?
- threat
- 2.Qe5#
- 2.Qxe4#
- 2.fxe3#
- 1...Rxg1
- 2.Qe5#
- 2.Qxe4#
- 1...exf2
- 2.Qxe4#
- 1...Bc5
- 2.Qe5#
- 2.Qxe4#
- 1...Sb5
- 2.Qe5#
- 2.Qxe4#
- 1...Sd5
- 2.Qe5#
- 2.Qxe4#
- 1...Rg2
- 2.Qe5#
- 2.Qxe4#
- 1...Rg5
- 2.Qxe4#
- 2.fxe3#
- 1...Re6
- 2.Rg4#
- 2.fxe3#
- 1...Bf5
- 2.Be5#
- 2.Qe5#
- 2.fxe3#
- 1...e2
- 2.Qe5#
- 2.Qxe4#
- 1...Bxd4!
- threat
- 1.Qd5?
- threat
- 2.Qxe4#
- 2.Qe5#
- 1...Sxf2
- 2.Qe5#
- 1...exf2
- 2.Qxe4#
- 1...Rg5
- 2.Qxe4#
- 1...Re6
- 2.Rg4#
- 2.Qf5#
- 1...Bd4
- 2.Qxe4#
- 1...Bf5
- 2.Be5#
- 2.Qe5#
- 2.Qxf5#
- 1...Sd2
- 2.Sd3#
- 2.Qe5#
- 1...Sg3
- 2.Sg2#
- 2.Sd3#
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Sg5
- 2.Sg2#
- 2.Sd3#
- 2.Qe5#
- 1...Sd6
- 2.Sd3#
- 2.Qe5#
- 1...Sf6
- 2.Sd3#
- 2.Qe5#
- 2.Qd6#
- 1...Sxd5!
- threat
- 1.Qd6+?
- 1...Sxd6
- 2.Sd3#
- 1...Rxd6!
- 1...Sxd6
- 1.Qf8+?
- 1...Bf5
- 2.Be5#
- 2.Rxf5#
- 2.Qxf5#
- 1...Sf6
- 2.Sd3#
- 2.Qd6#
- 1...Rf6!
- 1...Bf5
- 1.Bxe4?
- Keys
- 1.Qd3!
- threat
- 2.Qxe4#
- 1...Sxf2
- 2.Be5#
- 1...Re6
- 2.Rg4#
- 1...Bf5
- 2.Be5#
- 1...Sd2
- 2.Be5#
- 1...Sg3
- 2.Sg2#
- 1...Sc5
- 2.fxe3#
- 1...Sg5
- 2.Sg2#
- 2.Be5#
- 1...Sd6
- 2.Be5#
- 1...Sf6
- 2.Qd6#
- threat
- 1.Qd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(h);SBLOCK::B(I)
- S(c);::S(B)
- Tries
- Try
- B(G);XS(c)
- Threat
- DUALS(2)
- Vars
- B(f);::S(B)
- S(g);::S(B)
- Refutation
- P(b);XP(D)
- Try
- Q(H);CHECK
- Refutation
- R(e);XQ(H)
- Try
- Q(H);CHECK
- Vars
- S(c);XQ(H)::S(B)
- Refutation
- R(e);XQ(H)
- Try
- Q(H);CHECK,XS(g)
- Vars
- S(c);P_SPINS(c)::S(B)
- Refutation
- R(e);P_SPINR(e)
- Try
- Q(H);P_PINS(c)
- Threat
- DUALS(3)
- Vars
- P(b);XP(D)::QAR1(H),XS(c)
- Refutation
- B(f);N_SPINS(c),XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(c);XP(D)::QAB1(H)
- P(b);XP(D)::QAR1(H),XS(c)
- R(e);::QAR1(H),XS(c)
- B(f);::QAR1(H),XS(c)
- S(c);::QAB1(H)
- Refutation
- S(g);XQ(H)
- Try
- Q(H);CHECK
- Vars
- S(c);XQ(H)::S(B)
- Refutation
- R(e);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XS(c)
- Vars
- S(c);XP(D)::B(I)
- R(e);N_GUARD,S_CUTB(h)::R1(C)
- B(h);SBLOCK::B(I)
- S(c);::B(I)
- S(c);S_CUTR(e)::S(B)
- S(c);S_CUTB(f)::P(D),XP(b)
- S(c);N_GUARD,S_CUTR(e)::QAB(H)
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).