MESON Chess Problem Database
Problem Display
PID: 64667 (5BBn/1K6/3N2k1/6p1/4RR2/n1pQ2N1/2p5/7q w - - 0 1)
Promislo, Charles
Good Companions (December), 1919
#2
8 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4+
- 2.Qxe4#
- 1...Qa1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qb1+
- 2.Rb4#
- 1...Qc1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qd1
- 2.Re6#
- 1...Qe1
- 2.Rxe1#
- 2.Re2#
- 2.Re3#
- 2.Re6#
- 1...Qf1
- 2.Re2#
- 2.Re6#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qh2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qh3
- 2.Re6#
- 1...Qh4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qh5
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qh6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qh7+
- 2.Re7#
- 1...Qxe4+
- Tries
- 1.Se8?
- threat
- 2.Rf6#
- 2.Qa6#
- 2.Qd6#
- 1...Qxe4+
- 2.Qxe4#
- 1...Qb1+
- 2.Rb4#
- 1...Qh7+
- 2.Re7#
- 1...g4
- 2.Rxg4#
- 1...Qf3
- 2.Qa6#
- 2.Qd6#
- 1...Qd1
- 2.Re6#
- 2.Rf6#
- 1...Qf1
- 2.Re2#
- 2.Re6#
- 2.Qd6#
- 1...Qg1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Rf6#
- 2.Qd6#
- 1...Qh3
- 2.Re6#
- 2.Rf6#
- 1...Sc4
- 2.Rf6#
- 1...Sb5
- 2.Rf6#
- 1...Sf7
- 2.Rf6#
- 1...gxf4!
- threat
- 1.Bh7+?
- 1...Qxh7+
- 2.Re7#
- 1...Kxh7!
- 1...Qxh7+
- 1.Rf3?
- threat
- 2.Re1#
- 2.Re2#
- 2.Ree3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Ref4#
- 2.Rg4#
- 2.Rh4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qb1+
- 2.Rb4#
- 1...Qh7+
- 2.Re7#
- 1...g4
- 2.Rxg4#
- 2.Re5#
- 1...c1S
- 2.Re6#
- 1...Qd1
- 2.Re6#
- 1...Qe1
- 2.Rxe1#
- 2.Re2#
- 2.Ree3#
- 2.Re6#
- 1...Qf1
- 2.Re2#
- 2.Re6#
- 1...Qh3
- 2.Rg4#
- 2.Re6#
- 1...Qh4
- 2.Ref4#
- 2.Rg4#
- 2.Rxh4#
- 2.Re6#
- 1...Sc4
- 2.Re1#
- 2.Re2#
- 2.Ree3#
- 2.Rxc4#
- 2.Rd4#
- 2.Ref4#
- 2.Rg4#
- 2.Rh4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qxf3!
- threat
- 1.Se8?
- Keys
- 1.Qa6!
- threat
- 2.Sc4#
- 2.Sb5#
- 2.Sdf5#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qxe4+
- 2.Sdxe4#
- 1...Qb1+
- 2.Sb5#
- 1...Qh7+
- 2.Sf7#
- 1...gxf4
- 2.Sf7#
- 1...g4
- 2.Sf7#
- 1...Qd1
- 2.Re6#
- 1...Qf1
- 2.Sc4#
- 2.Sb5#
- 2.Re6#
- 1...Qg1
- 2.Re6#
- 1...Qh3
- 2.Sdf5#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sxb5#
- 1...Sf7
- 2.Sxf7#
- threat
- 1.Qa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XR(C)::QAB(A),XQ(a)
- Q(a);CHECK,N_PINR(C)::QAB(A)+R(C)
- Q(a);N_PINR(C)::QAB(A)+R(C),DCHECK
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XR(C)::QAB(A),XQ(a)
- Q(a);CHECK,N_PINR(C)::QAB(A)+R(C)
- P(e);OGATEB::R(D),XP(e)
- S(c);::R1(D)
- S(g);::R1(D)
- Refutation
- P(e);XR(D)
- Try
- B(H);CHECK
- Vars
- Q(a);CHECK,N_PINR(C),XB(H)::QAB(A)+R(C)
- Refutation
- K(f);S_FLIGHT,XB(H)
- Try
- R(D);N_SPINR(C)
- Threat
- DUALS(14)
- Vars
- Q(a);CHECK::QAB(A)+R(C)
- P(b);::QAB(A)+R(C),DCHECK
- Q(a);::QAB(A)+R(C),DCHECK
- Refutation
- Q(a);P_PINR(C),XR(D)
- Try
- Actual
- Q(A);
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK,XR(C)::QAR(A)+S(E),XQ(a)
- Q(a);CHECK,N_PINR(C)::QAR(A)+S(E)
- P(e);XR(D)::QAR(A)+S(E)
- P(e);::QAR(A)+S(E)
- Q(a);N_PINR(C)::R(C)
- Q(a);N_PINR(C)::QAR(A)+S(E)
- S(c);::QAR(A)+S(E),XS(c)
- S(g);::QAR(A)+S(E),XS(g)
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).