MESON Chess Problem Database
Problem Display
PID: 237725 (2B4Q/6n1/1K2R1b1/1N1k2bp/1p3r2/1P1n4/3R1N1B/8 w - - 0 1)
Ellerman, Arnoldo
Shakhmaty v SSSR, 1947
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxf2
- 2.Re5#
- 1...Rf3
- 2.Re5#
- 2.Rd6#
- 1...Rc4
- 2.Re5#
- 2.Rd6#
- 1...Rd4
- 2.Sc7#
- 2.Rd6#
- 1...Re4
- 2.Rd6#
- 1...Rg4
- 2.Re5#
- 2.Rd6#
- 1...Rh4
- 2.Re5#
- 2.Rd6#
- 1...Rf5
- 2.Rxd3#
- 2.Rd6#
- 1...Rf6
- 2.Qd8#
- 1...Rf7
- 2.Re5#
- 2.Rd6#
- 1...Rf8
- 2.Re5#
- 2.Rd6#
- 1...Bh6
- 2.Qd8#
- 1...Bd8+
- 2.Qxd8#
- 1...Sf5
- 2.Sc7#
- 2.Re5#
- 2.Qe5#
- 1...Sxe6
- 2.Bb7#
- 1...Se8
- 2.Re5#
- 2.Qe5#
- 1...Rxf2
- Tries
- 1.Sxd3?
- threat
- 2.Sxb4#
- 2.Sxf4#
- 2.Re5#
- 1...Bd8+
- 2.Qxd8#
- 1...Sxe6
- 2.Bb7#
- 2.Qe5#
- 1...Rf1
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rf2
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rf3
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rc4
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rd4
- 2.Sxb4#
- 2.Sc7#
- 2.Re5#
- 1...Re4
- 2.Sxb4#
- 2.Sf4#
- 2.Rd6#
- 1...Rg4
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rh4
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rf5
- 2.Sxb4#
- 2.Sf4#
- 1...Rf6
- 2.Sxb4#
- 2.Sf4#
- 2.Qd8#
- 1...Rf7
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Rf8
- 2.Sxb4#
- 2.Sf4#
- 2.Re5#
- 1...Bf6
- 2.Sxb4#
- 2.Sxf4#
- 1...Bxd3!
- threat
- 1.Sg4?
- threat
- 2.Se3#
- 2.Re5#
- 1...Bd8+
- 2.Qxd8#
- 1...Rxg4
- 2.Re5#
- 1...Sxe6
- 2.Bb7#
- 2.Qe5#
- 1...Bf6
- 2.Se3#
- 1...Rf1
- 2.Re5#
- 1...Rf2
- 2.Re5#
- 1...Rf3
- 2.Re5#
- 1...Rc4
- 2.Re5#
- 1...Rd4
- 2.Sc7#
- 1...Re4
- 2.Rd6#
- 1...Rf5
- 2.Rxd3#
- 1...Rf6
- 2.Qd8#
- 1...Rf7
- 2.Re5#
- 1...Rf8
- 2.Re5#
- 1...Sf5
- 2.Sc7#
- 2.Re5#
- 2.Qe5#
- 1...hxg4!
- threat
- 1.Bxf4?
- threat
- 2.Re5#
- 2.Rd6#
- 1...Bd8+
- 2.Qxd8#
- 1...Sxe6
- 2.Bb7#
- 2.Qe5#
- 1...Bf6
- 2.Rd6#
- 1...Be7
- 2.Re5#
- 1...Sf5
- 2.Sc7#
- 2.Re5#
- 2.Qe5#
- 1...Se8
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Bxf4!
- threat
- 1.Rde2?
- threat
- 2.Bb7#
- 2.Rd6#
- 1...Bd8+
- 2.Qxd8#
- 1...Sxe6
- 2.Bxe6#
- 2.Bb7#
- 1...Rc4
- 2.Rd6#
- 1...Re4
- 2.Rd6#
- 1...Rf6
- 2.Bb7#
- 2.Qd8#
- 1...Rf7
- 2.Rd6#
- 1...Be7
- 2.Bb7#
- 1...Be8
- 2.Rd6#
- 1...Sc5
- 2.R2e5#
- 2.R6e5#
- 2.Rd6#
- 1...Se5
- 2.R2xe5#
- 2.R6xe5#
- 2.Rd6#
- 1...Sf5
- 2.Sc7#
- 2.Bb7#
- 1...Se8
- 2.Bb7#
- 1...Be4!
- threat
- 1.Rxd3+?
- 1...Rd4
- 2.Sc7#
- 2.Rxd4#
- 2.Re5#
- 2.Rd6#
- 1...Bxd3!
- 1...Rd4
- 1.Qxg7?
- threat
- 2.Sc7#
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 2.Qb7#
- 2.Qd7#
- 1...Rxf2
- 2.Sc7#
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 2.Qb7#
- 2.Qd7#
- 1...Bf6
- 2.Qb7#
- 2.Qd7#
- 1...Rc4
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 2.Qd7#
- 1...Rd4
- 2.Sc7#
- 2.Rd6#
- 2.Qxd4#
- 2.Qb7#
- 2.Qd7#
- 1...Re4
- 2.Sc7#
- 2.Rd6#
- 2.Qb7#
- 2.Qd7#
- 1...Rf5
- 2.Sc7#
- 2.Rxd3#
- 2.Rd6#
- 2.Qd4#
- 2.Qb7#
- 2.Qd7#
- 1...Rf6
- 2.Qb7#
- 2.Qd7#
- 1...Rf7
- 2.Re5#
- 2.Rd6#
- 2.Qd4#
- 2.Qe5#
- 1...Be7
- 2.Sc7#
- 2.Re5#
- 2.Qe5#
- 1...Bf7
- 2.Sc7#
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 1...Be8
- 2.Sc7#
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 1...Bd8+!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Bd8+
- 2.Qxd8#
- 1...Rxf8
- 2.Re5#
- 2.Rd6#
- 1...Sxe6
- 2.Qd6#
- 1...Rc4
- 2.Re5#
- 2.Rd6#
- 2.Qd6#
- 1...Rd4
- 2.Sc7#
- 2.Rd6#
- 2.Qd6#
- 1...Sf5
- 2.Qc5#
- 1...Se8
- 2.Qc5#
- 1...Be7!
- threat
- 1.Sxd3?
- Keys
- 1.Sd1!
- threat
- 2.Se3#
- 1...Bd8+
- 2.Qxd8#
- 1...Sxe6
- 2.Bb7#
- 1...Rf1
- 2.Re5#
- 1...Rf2
- 2.Re5#
- 1...Rf3
- 2.Re5#
- 1...Rc4
- 2.Re5#
- 1...Rd4
- 2.Sc7#
- 1...Re4
- 2.Rd6#
- 1...Rg4
- 2.Re5#
- 1...Rh4
- 2.Re5#
- 1...Rf5
- 2.Rxd3#
- 1...Rf6
- 2.Qd8#
- 1...Rf7
- 2.Re5#
- 1...Rf8
- 2.Re5#
- 1...Sf5
- 2.Sc7#
- 2.Re5#
- 2.Qe5#
- threat
- 1.Sd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- R(c);XS(B)::R1(G)
- R(c);::R1(G)
- R(c);P_PINR(G),S_CUTB(e)::QAR(I)
- B(e);N_GUARD::QAR(I)
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- S(h);SBLOCK,XR(G)::B(H)
- Tries
- Try
- S(B);XS(a)
- Threat
- DUALS(3)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- Refutation
- B(g);P_SPINB(g),XS(B)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- R(c);XS(B)::R1(G)
- B(e);::S(B)
- R(c);::R1(G)
- R(c);N_SPINS(a),SBLOCK::S(E)
- R(c);SBLOCK::R1(G)
- R(c);N_GUARD,S_CUTB(g)::R(A),XS(a)
- R(c);P_PINR(G),S_CUTB(e)::QAR(I)
- Refutation
- P(f);XS(B)
- Try
- B(C);XR(c)
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- B(e);::R1(G)
- Refutation
- B(e);XB(C)
- Try
- R(A);N_PINS(a)
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- R(c);::R1(G)
- B(e);::B(H)
- B(g);::R1(G)
- S(h);::B(H)
- Refutation
- B(g);
- Try
- R(A);CHECK,XS(a)
- Refutation
- B(g);XR(A)
- Try
- Q(I);XS(h)
- Threat
- DUALS(6)
- Refutation
- B(e);CHECK
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- S(h);XR(G)::QAR1(I)
- S(h);::QAR1(I)
- Refutation
- B(e);
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- B(e);CHECK,N_GUARD::QAR(I),XB(e)
- S(h);SBLOCK,XR(G)::B(H)
- R(c);::R1(G)
- R(c);N_SPINS(a),SBLOCK::S(E)
- R(c);SBLOCK::R1(G)
- R(c);N_GUARD,S_CUTB(g)::R(A),XS(a)
- R(c);P_PINR(G),S_CUTB(e)::QAR(I)
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).