MESON Chess Problem Database
Problem Display
PID: 83702 (3R1K2/1p6/1Rbnk1p1/6Pp/1P2nB1N/1P2P1P1/6QP/8 w - - 0 1)
Ellerman, Arnoldo
5th Prize, Good Companions, 1919
#2
12 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Rxd6#
- 1...Ba4
- 2.Qxe4#
- 1...Bb5
- 2.Qxe4#
- 1...Bd5
- 2.Qh3#
- 1...Bd7
- 2.Qxe4#
- 1...Be8
- 2.Qxe4#
- 1...Sd2
- 2.Rxd6#
- 1...Sf2
- 2.Rxd6#
- 1...Sc3
- 2.Rxd6#
- 1...Sxg3
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sxg5
- 2.Rxd6#
- 1...Sf6
- 2.Rxd6#
- 1...Sc4
- 2.Qh3#
- 1...Sb5
- 2.Qh3#
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sf7
- 2.Qh3#
- 1...Sc8
- 2.Qh3#
- 2.Qxe4#
- 1...Se8
- 2.Qh3#
- 2.Qxe4#
- 1...Kd5
- Tries
- 1.Rxc6?
- threat
- 2.Qxe4#
- 1...Kd5
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sxg3
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sxg5
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sd2
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sf2
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sc3
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sc5
- 2.Rcxd6#
- 2.Rdxd6#
- 1...Sf6
- 2.Rcxd6#
- 2.Rdxd6#
- 1...bxc6!
- threat
- 1.Qf1?
- 1...Kd5
- 2.Qc4#
- 1...Sxg3
- 2.Rxd6#
- 1...Sxg5
- 2.Rxd6#
- 1...Ba4
- 2.Qc4#
- 1...Bd5
- 2.Qh3#
- 1...Bd7
- 2.Qc4#
- 1...Be8
- 2.Qc4#
- 1...Sd2
- 2.Rxd6#
- 1...Sf2
- 2.Rxd6#
- 1...Sc3
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sf6
- 2.Rxd6#
- 1...Sc4
- 2.Qh3#
- 2.Qxc4#
- 1...Sb5
- 2.Qh3#
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sf7
- 2.Qh3#
- 2.Qc4#
- 1...Sc8
- 2.Qh3#
- 2.Qc4#
- 1...Se8
- 2.Qh3#
- 2.Qc4#
- 1...Bb5!
- 1...Kd5
- 1.Qxe4+?
- 1...Bxe4
- 2.Rbxd6#
- 2.Rdxd6#
- 1...Sxe4!
- 1...Bxe4
- 1.b5?
- 1...Bxb5
- 2.Qxe4#
- 1...Sxg3
- 2.Rxd6#
- 1...Sxg5
- 2.Rxd6#
- 1...Sxb5
- 2.Qh3#
- 2.Qxe4#
- 1...Bd5
- 2.Qh3#
- 1...Bd7
- 2.Qxe4#
- 1...Be8
- 2.Qxe4#
- 1...Sd2
- 2.Rxd6#
- 1...Sf2
- 2.Rxd6#
- 1...Sc3
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sf6
- 2.Rxd6#
- 1...Sc4
- 2.Qh3#
- 1...Sf5
- 2.Qxe4#
- 1...Sf7
- 2.Qh3#
- 1...Sc8
- 2.Qh3#
- 2.Qxe4#
- 1...Se8
- 2.Qh3#
- 2.Qxe4#
- 1...Kd5!
- 1...Bxb5
- 1.Rxc6?
- Keys
- 1.Qc2!
- 1...Kd5
- 2.Qc4#
- 1...Sxg3
- 2.Rxd6#
- 1...Sxg5
- 2.Rxd6#
- 1...Bd5
- 2.Qc8#
- 1...Ba4
- 2.Qxe4#
- 2.Qc4#
- 1...Bb5
- 2.Qxe4#
- 1...Bd7
- 2.Qxe4#
- 2.Qc4#
- 1...Be8
- 2.Qxe4#
- 2.Qc4#
- 1...Sd2
- 2.Rxd6#
- 1...Sf2
- 2.Rxd6#
- 1...Sc3
- 2.Rxd6#
- 1...Sc5
- 2.Rxd6#
- 1...Sf6
- 2.Rxd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qxe4#
- 2.Qc4#
- 1...Sf5
- 2.Qxe4#
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...Sc8
- 2.Qxe4#
- 2.Qc4#
- 1...Se8
- 2.Qxe4#
- 2.Qc4#
- 1...Kd5
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- K(e);P_SPINS(a),S_FLIGHT::R1(K),XS(d)
- B(c);N_GUARD,P_SPINS(d)::QAR2(A),XS(a)
- B(c);P_SPINS(d),SBLOCK::QAB(A)
- S(a);N_GUARD::R1(K),XS(d)
- S(a);N_GUARD,XP(E)::R1(K),XS(d)
- S(a);N_GUARD,XP(I)::R1(K),XS(d)
- S(d);N_GUARD,P_SPINB(c)::QAB(A)
- S(d);N_GUARD,P_SPINB(c)::QAR2(A),XS(a)
- Tries
- Try
- R(J);P_PINS(d),XB(c)
- Threat
- QAR2(A),XS(a)
- Refutation
- P(g);N_SPINS(d),XR(J)
- Try
- Q(A);
- Vars
- K(e);P_SPINS(d),S_FLIGHT::QAB1(A)
- S(a);N_GUARD,XP(E)::R1(K),XS(d)
- S(a);N_GUARD,XP(I)::R1(K),XS(d)
- B(c);N_GUARD,P_SPINS(d)::QAB(A)
- B(c);P_SPINS(d),SBLOCK::QAB(A)
- S(a);N_GUARD::R1(K),XS(d)
- S(d);N_GUARD,P_SPINB(c)::QAB(A)
- Refutation
- B(c);P_SPINS(d)
- Try
- Q(A);CHECK,XS(a)
- Refutation
- S(d);P_SPINB(c),XQ(A)
- Try
- P(F);
- Vars
- B(c);N_GUARD,P_SPINS(d),XP(F)::QAR2(A),XS(a)
- S(a);N_GUARD,XP(E)::R1(K),XS(d)
- S(a);N_GUARD,XP(I)::R1(K),XS(d)
- B(c);P_SPINS(d),SBLOCK::QAB(A)
- B(c);N_GUARD,P_SPINS(d)::QAR2(A),XS(a)
- S(a);N_GUARD::R1(K),XS(d)
- S(d);N_GUARD,P_SPINB(c)::QAB(A)
- S(d);N_GUARD,P_SPINB(c)::QAR2(A),XS(a)
- Refutation
- K(e);P_SPINS(a),S_FLIGHT
- Try
- Actual
- Q(A);
- Vars
- K(e);P_SPINS(d),S_FLIGHT::QAB1(A)
- S(a);N_GUARD,XP(E)::R1(K),XS(d)
- S(a);N_GUARD,XP(I)::R1(K),XS(d)
- B(c);OGATE,P_SPINS(d),SBLOCK::QAB(A)
- B(c);N_GUARD,P_SPINS(d)::QAR2(A),XS(a)
- S(a);N_GUARD::R1(K),XS(d)
- S(d);N_GUARD,P_SPINB(c)::QAB(A),XS(d)
- S(d);N_GUARD,P_SPINB(c)::QAB(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).