MESON Chess Problem Database
Problem Display
PID: 64813 (3K4/2R5/8/pp2Q3/bkN1B1R1/3n1p2/1P1r1r2/1nN1B3 w - - 0 1)
Bettmann, Henry Wald
1st Prize, Good Companions (March Class B), 1922
#2
9 + 9
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Sa3
- 2.Qc3#
- 2.bxa3#
- 1...Sc3
- 2.Qxc3#
- 2.bxc3#
- 1...Sf4+
- 2.Qd6#
- 1...Sa3
- Tries
- 1.Sxd2?
- threat
- 2.Sa2#
- 2.Sxd3#
- 2.Bxd3#
- 2.Qd4#
- 1...Rxd2
- 2.Bxd3#
- 2.Qd4#
- 1...Sxd2
- 2.Bxd3#
- 2.Qc3#
- 2.Qd4#
- 1...Sxc1
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bxf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 2.Qd4#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...Sxe1
- 2.Sa2#
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bxf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 2.Qd4#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...Sxb2
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...Sxe5
- 2.Sa2#
- 1...Bd1
- 2.Bxd3#
- 2.Qd4#
- 1...Bc2
- 2.Bxd3#
- 2.Qd4#
- 1...Re2
- 2.Sa2#
- 2.Sxd3#
- 2.Qd4#
- 1...Rg2
- 2.Sa2#
- 2.Sxd3#
- 2.Qd4#
- 1...Sa3
- 2.Sa2#
- 2.Sxd3#
- 2.Qc3#
- 1...Sc3
- 2.Sxd3#
- 2.Qxc3#
- 2.Qd4#
- 1...Sf4
- 2.Sa2#
- 2.Qd4#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...Sc5
- 2.Sa2#
- 2.Qd4#
- 2.Qxc5#
- 1...Bb3!
- threat
- 1.Sa3?
- threat
- 2.Bxd3#
- 2.Qd4#
- 1...Sxc1+
- 2.Bd5#
- 1...Sxe1+
- 2.Bd3#
- 1...Sxb2+
- 2.Qd6#
- 1...Sf4+
- 2.Qd4#
- 2.Qd6#
- 1...Sc5+
- 2.Qd4#
- 1...Sxa3
- 2.Qc3#
- 1...Bb3
- 2.Qxb5#
- 1...Re2
- 2.Qd4#
- 1...Rg2
- 2.Qd4#
- 1...Sc3
- 2.Qxc3#
- 2.Qd4#
- 1...Sxe5+!
- threat
- 1.Se3?
- threat
- 2.Sd5#
- 2.Bxd3#
- 2.Qd4#
- 1...Sxc1+
- 2.Bd5#
- 1...Sxe1+
- 2.Bd3#
- 1...Sxb2+
- 2.Qd6#
- 1...Sf4+
- 2.Qd4#
- 2.Qd6#
- 1...Sc5+
- 2.Qd4#
- 1...Sxe5+
- 2.Sd5#
- 1...Bd1
- 2.Bxd3#
- 2.Qd4#
- 1...Bc2
- 2.Bxd3#
- 2.Qd4#
- 1...Rg2
- 2.Sd5#
- 2.Qd4#
- 1...Sa3
- 2.Sd5#
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 2.Qd4#
- 1...Bb3!
- threat
- 1.Sd6?
- threat
- 2.Bxd3#
- 2.Qd4#
- 1...Sxc1
- 2.Bc2#
- 2.Bd5#
- 1...Sxe1
- 2.Bd3#
- 2.Qc5#
- 1...Sxb2
- 2.Qc5#
- 1...Bb3
- 2.Qxb5#
- 1...Re2
- 2.Qd4#
- 1...Rg2
- 2.Qd4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 2.Qc5#
- 1...Sc5
- 2.Qd4#
- 2.Qxc5#
- 1...Sxe5!
- threat
- 1.Bxd2+?
- 1...Sxd2
- 2.Qc3#
- 1...Sc3
- 2.Bxc3#
- 2.Qxc3#
- 2.bxc3#
- 1...Rxd2!
- 1...Sxd2
- 1.Bxd3?
- threat
- 2.Sxd2#
- 2.Sa3#
- 2.Se3#
- 2.Sb6#
- 2.Sd6#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...bxc4
- 2.Rgxc4#
- 2.Rcxc4#
- 2.Qc5#
- 1...Bd1
- 2.Sxd2#
- 2.Sa3#
- 2.Se3#
- 2.Sb6#
- 2.Sd6#
- 1...Bc2
- 2.Sxd2#
- 2.Sa3#
- 2.Se3#
- 2.Sb6#
- 2.Sd6#
- 1...Re2
- 2.Se3#
- 2.Qd6#
- 2.Qc5#
- 1...Rg2
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 1...Sa3
- 2.Sxa3#
- 2.Qc3#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 2.bxa3#
- 1...Sc3
- 2.Qxc3#
- 2.Qd6#
- 2.Qc5#
- 2.Qe7#
- 2.bxc3#
- 1...Bb3!
- threat
- 1.Sxd2?
- Keys
- 1.Sb6!
- threat
- 2.Sd5#
- 2.Bxd3#
- 2.Qd4#
- 1...Sxc1+
- 2.Bd5#
- 1...Sxe1+
- 2.Bd3#
- 1...Sxb2+
- 2.Qd6#
- 1...Sf4+
- 2.Qd4#
- 2.Qd6#
- 1...Sc5+
- 2.Qd4#
- 1...Sxe5+
- 2.Sd5#
- 1...Re2
- 2.Sd5#
- 2.Qd4#
- 1...Rg2
- 2.Sd5#
- 2.Qd4#
- 1...Bd1
- 2.Bxd3#
- 2.Qd4#
- 1...Bc2
- 2.Bxd3#
- 2.Qd4#
- 1...Bb3
- 2.Sxd3#
- 1...Sa3
- 2.Sd5#
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 2.Qd4#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- S(d);CHECK,N_GUARD::QAB(G)
- Tries
- Try
- S(D);XR(b)
- Threat
- DUALS(4)
- Vars
- S(d);XQ(G)::S(A)
- Refutation
- B(f);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(d);CHECK,N_GUARD,XS(A)::R(F)+B(E)
- S(d);CHECK,N_SPINR(b),XB(B)::R(F)+B(E)
- S(d);CHECK,N_GUARD,XP(C)::QAB(G)
- S(d);CHECK::QAR2(G)
- S(a);N_GUARD,XS(D)::QAB1(G)
- B(f);N_GUARD::QAR1(G),XP(i)
- R(c);::QAR2(G)
- Refutation
- S(d);CHECK,XQ(G)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,N_GUARD,XS(A)::R(F)+B(E)
- S(d);CHECK,N_SPINR(b),XB(B)::R(F)+B(E)
- S(d);CHECK,N_GUARD,XP(C)::QAB(G)
- S(d);CHECK::QAR2(G)
- S(d);CHECK,XQ(G)::S(D)
- Refutation
- B(f);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,P_PINS(D),XP(C)::QAB1(G)
- B(f);N_GUARD::QAR1(G),XP(i)
- R(c);::QAR2(G)
- S(a);N_GUARD::QAB1(G)
- Refutation
- S(d);P_PINS(D),XQ(G)
- Try
- B(B);CHECK,XR(b)
- Vars
- S(a);N_GUARD,XB(B)::QAB1(G)
- Refutation
- R(c);XB(B)
- Try
- B(E);P_SPINB(E),XS(d)
- Threat
- DUALS(8)
- Refutation
- B(f);
- Try
- Actual
- S(D);
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,N_GUARD,XS(A)::R(F)+B(E)
- S(d);CHECK,N_SPINR(b),XB(B)::R(F)+B(E)
- S(d);CHECK,N_GUARD,XP(C)::QAB(G)
- S(d);CHECK::QAR2(G)
- S(d);CHECK,XQ(G)::S(D)
- B(f);SBLOCK::S(A),XS(d)
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).