MESON Chess Problem Database
Problem Display
PID: 233869 (8/bN3P1K/6Qp/2Pkrn1R/1Pp3Br/2pb1P2/n2R4/3N2B1 w - - 0 1)
Ellerman, Arnoldo
Skakbladet, 1948
#2
12 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qd6#
- 1...Re2
- 2.Qd6#
- 1...Re3
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Re7
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Sc1
- 2.Sxc3#
- 1...Sxb4
- 2.Sxc3#
- 1...Se3
- 2.Qe4#
- 1...Sd4
- 2.Se3#
- 1...Se7
- 2.Qe4#
- 1...Sg7
- 2.Qe4#
- 1...Re1
- Tries
- 1.Se3+?
- 1...Rxe3
- 2.Qd6#
- 1...Sxe3
- 2.Qe4#
- 1...Kd4!
- 1...Rxe3
- 1.Sa5?
- threat
- 2.Qc6#
- 1...Sxb4
- 2.Sxc3#
- 1...Re1
- 2.Qd6#
- 1...Re2
- 2.Qd6#
- 1...Re3
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Re7
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Be6#
- 1...Sd4
- 2.Se3#
- 1...Sd6
- 2.Be6#
- 1...Se7
- 2.Be6#
- 2.Qe4#
- 1...Sg7
- 2.Qe4#
- 1...Re6!
- threat
- 1.Rxd3+?
- 1...Sd4
- 2.Se3#
- 2.Rxd4#
- 2.Qe4#
- 2.Qd6#
- 2.Qe6#
- 1...cxd3!
- 1...Sd4
- 1.b5?
- threat
- 2.Qc6#
- 1...Re1
- 2.Qd6#
- 1...Re2
- 2.Qd6#
- 1...Re3
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Re7
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Se3
- 2.Qe4#
- 1...Sb4
- 2.Sxc3#
- 1...Sg3
- 2.Be6#
- 1...Sd4
- 2.Se3#
- 1...Sd6
- 2.Be6#
- 1...Se7
- 2.Be6#
- 2.Qe4#
- 1...Sg7
- 2.Qe4#
- 1...Re6!
- threat
- 1.Se3+?
- Keys
- 1.Sd8!
- threat
- 2.Qc6#
- 1...Sxb4
- 2.Sxc3#
- 1...Re1
- 2.Qd6#
- 1...Re2
- 2.Qd6#
- 1...Re3
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Re8
- 2.Qd6#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Be6#
- 1...Sd4
- 2.Se3#
- 1...Sd6
- 2.Be6#
- 1...Se7
- 2.Be6#
- 2.Qe4#
- 1...Sg7
- 2.Qe4#
- threat
- 1.Sd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(g);P_SPINS(h)::QAR1(I)
- R(g);P_PINP(K),P_SPINS(h)::QAR1(I)
- S(a);N_GUARD::S(A),XP(b)
- S(a);N_GUARD,XP(E)::S(A),XP(b)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::QAB1(I)
- S(h);N_GUARD,N_SPINB(c),P_PINQ(I),P_SPINR(g),SBLOCK::S(A)
- Tries
- Try
- S(A);CHECK
- Vars
- R(g);P_SPINS(h),XS(A)::QAR1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g),XS(A)::QAB1(I)
- Refutation
- K(f);P-FLIGHT
- Try
- S(J);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD,XP(E)::S(A),XP(b)
- R(g);P_SPINS(h)::QAR1(I)
- R(g);P_PINP(K),P_SPINS(h)::QAR1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::QAB1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::B(F)
- S(h);N_GUARD,N_SPINB(c),P_PINQ(I),P_SPINR(g),SBLOCK::S(A)
- Refutation
- R(g);P_SPINS(h)
- Try
- R(C);CHECK,XB(c)
- Refutation
- P(d);XR(C)
- Try
- P(E);
- Threat
- QAB1(I)
- Vars
- R(g);P_SPINS(h)::QAR1(I)
- R(g);P_PINP(K),P_SPINS(h)::QAR1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::QAB1(I)
- S(a);N_GUARD::S(A),XP(b)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::B(F)
- S(h);N_GUARD,N_SPINB(c),P_PINQ(I),P_SPINR(g),SBLOCK::S(A)
- Refutation
- R(g);P_SPINS(h)
- Try
- Actual
- S(J);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD,XP(E)::S(A),XP(b)
- R(g);P_SPINS(h)::QAR1(I)
- R(g);N_GUARD,P_SPINS(h)::QAB1(I),XR(g)
- R(g);P_PINP(K),P_SPINS(h)::QAR1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::QAB1(I)
- S(h);OGATE,P_PINQ(I),P_SPINR(g)::B(F)
- S(h);N_GUARD,N_SPINB(c),P_PINQ(I),P_SPINR(g),SBLOCK::S(A)
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).