MESON Chess Problem Database
Problem Display
PID: 146631 (6r1/5bn1/3Rp2B/4pP2/p2Nk3/K3N2r/3Q1R2/4n2q w - - 0 1)
Ellerman, Arnoldo
Good Companions (February), 1918
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2+
- 2.Qxc2#
- 1...Sg2
- 2.Qc2#
- 1...Sf3
- 2.Qc2#
- 1...exd4
- 2.Qxd4#
- 1...Rxe3+
- Tries
- 1.Se2?
- threat
- 2.Sc3#
- 2.Qb4#
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxh6
- 2.Sc3#
- 2.Sg3#
- 1...Sxf5
- 2.Sc3#
- 1...exf5
- 2.Sc3#
- 1...Rb8
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...Sf3
- 2.Sc3#
- 2.Qc2#
- 2.Qd3#
- 1...Rc8!
- threat
- 1.Sb3?
- threat
- 2.Sc5#
- 2.Qb4#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxe3
- 2.Qxe3#
- 2.Qb4#
- 1...Rxh6
- 2.Sc5#
- 1...Sxf5
- 2.Sc5#
- 1...axb3
- 2.Qb4#
- 1...exf5
- 2.Sc5#
- 1...Qf1
- 2.Sc5#
- 1...Rb8
- 2.Sc5#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Sc5#
- 2.Qc2#
- 2.Qd3#
- 1...Rc8!
- threat
- 1.Sf3?
- threat
- 2.Sg5#
- 2.Qb4#
- 1...Sc2+
- 2.Qxc2#
- 1...Qxf3
- 2.Qb4#
- 1...Rxf3
- 2.Qb4#
- 1...Rxh6
- 2.Sg5#
- 1...Sxf3
- 2.Qc2#
- 2.Qd3#
- 1...exf5
- 2.Sg5#
- 1...Rc8
- 2.Sg5#
- 1...Qg2
- 2.Qb4#
- 1...Qf1
- 2.Sg5#
- 1...Qg1
- 2.Qb4#
- 1...Rg3
- 2.Qb4#
- 1...Rh5
- 2.Qb4#
- 1...Rb8
- 2.Sg5#
- 1...Sd3
- 2.Sg5#
- 2.Qxd3#
- 1...Sh5
- 2.Qb4#
- 1...Se8
- 2.Qb4#
- 1...Sxf5!
- threat
- 1.Sb5?
- threat
- 2.Sc3#
- 2.Qb4#
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxh6
- 2.Sc3#
- 1...Sxf5
- 2.Sc3#
- 1...exf5
- 2.Sc3#
- 1...Qf1
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...Sf3
- 2.Sc3#
- 2.Qc2#
- 2.Qd3#
- 1...Rc8!
- threat
- 1.Sxe6?
- threat
- 2.Sc5#
- 2.Sg5#
- 2.Qb4#
- 2.Qd5#
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxh6
- 2.Sc5#
- 2.Sg5#
- 1...Sxf5
- 2.Sc5#
- 2.Qd5#
- 1...Sxe6
- 2.Qd5#
- 1...Rc8
- 2.Sg5#
- 2.Qd5#
- 1...Qg2
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Qf3
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Qf1
- 2.Sc5#
- 2.Sg5#
- 2.Qd5#
- 1...Qg1
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Rf3
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Rg3
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Rh5
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Rb8
- 2.Sc5#
- 2.Sg5#
- 2.Qd5#
- 1...Sd3
- 2.Sg5#
- 2.Qxd3#
- 1...Sf3
- 2.Sc5#
- 2.Qc2#
- 2.Qd3#
- 2.Qd5#
- 1...Sh5
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Se8
- 2.Sc5#
- 2.Qb4#
- 2.Qd5#
- 1...Bxe6!
- threat
- 1.Qc2+?
- 1...Sd3
- 2.Qc6#
- 1...Sxc2+!
- 1...Sd3
- 1.Se2?
- Keys
- 1.Qb4!
- threat
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Sxe6#
- 1...Rxe3+
- 2.Sb3#
- 1...Sc2+
- 2.Sxc2#
- 1...Kd3
- 2.Sf3#
- 1...Rxh6
- 2.Sdc2#
- 1...Sxf5
- 2.Sxf5#
- 1...exd4
- 2.Qxd4#
- 1...exf5
- 2.Se6#
- 1...Rc8
- 2.Sc6#
- 1...Qf3
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxf3#
- 2.Sb5#
- 2.Sc6#
- 2.Sxe6#
- 1...Qf1
- 2.Se2#
- 1...Rf3
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxf3#
- 2.Sb5#
- 2.Sc6#
- 2.Sxe6#
- 1...Rb8
- 2.Sb5#
- 1...Sd3
- 2.Qb7#
- 1...Sf3
- 2.Sxf3#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- R(c);CHECK,OGATE,XS(D)::QAR1(A),XR(c)
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- S(a);N_GUARD::QAB(A)
- S(a);N_GUARD,N_PINS(D)::QAB(A)
- P(f);OGATE,XS(E)::QAR1(A),XP(f)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(D)::QAR1(A),XR(c)
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- S(i);XP(F)::S(E)
- P(g);XP(F)::S(E)
- R(j);::S(E)
- Refutation
- R(j);
- Try
- S(E);N_SPINS(D)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- R(c);XB(H)::S(E)
- S(i);XP(F)::S(E)
- P(d);XS(E)::QAR(A)
- P(g);XP(F)::S(E)
- Q(b);::S(E)
- R(j);::S(E)
- S(a);N_GUARD::QAB1(A),XS(a)
- Refutation
- R(j);
- Try
- S(E);N_SPINS(D)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- Q(b);P_PINS(D),XS(E)::QAR(A)
- R(c);P_PINS(D),XS(E)::QAR(A)
- R(c);XB(H)::S(E)
- P(g);XP(F)::S(E)
- R(j);::S(E)
- Q(b);::QAR(A)
- Q(b);::S(E)
- R(c);::QAR(A)
- S(i);::QAR(A)
- Refutation
- S(i);XP(F)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(D)::QAR1(A),XR(c)
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- R(c);N_PINS(D),XB(H)::S(E)
- S(i);XP(F)::S(E)
- P(g);XP(F)::S(E)
- Q(b);::S(E)
- Refutation
- R(j);
- Try
- S(E);XP(g)
- Threat
- DUALS(4)
- Vars
- R(c);CHECK,OGATE,XS(D)::QAR1(A),XR(c)
- S(a);CHECK,N_GUARD::QAB(A),XS(a)
- S(i);XS(E)::QAB1(A)
- Refutation
- B(h);XS(E)
- Try
- Q(A);CHECK
- Vars
- S(a);N_PINS(D),P_SPINS(a),SBLOCK::QAB(A)
- Refutation
- S(a);CHECK,XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(7)
- Vars
- R(c);CHECK,XS(D)::QAR(A)+S(E)
- S(a);CHECK::QAR(A)+S(E),XS(a)
- K(e);N_PINS(D),S_FLIGHT::R(G)+S(E)
- R(c);N_PINS(D),XB(H)::QAR(A)+S(E)
- S(i);XP(F)::QAR(A)+S(E),XS(i)
- P(f);OGATE,P_SPINP(f),XS(E)::QAR1(A),XP(f)
- P(g);XP(F)::QAR(A)+S(E)
- R(j);::QAR(A)+S(E)
- Q(b);::QAR(A)+S(E)
- S(a);N_PINS(D),SBLOCK::QAB(A)
- S(a);N_PINS(D)::QAR(A)+S(E),XS(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).