MESON Chess Problem Database
Problem Display
PID: 21011 (5B2/8/1pp5/pP6/2B1KP2/P1kPN3/RpNpQp1R/6r1 w - - 0 1)
Albert, Bernard
1st Prize, Good Companions (January), 1915
#2
12 + 8
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bg7#
- 1...Rb1
- 2.Bg7#
- 1...Rc1
- 2.Bg7#
- 1...Rd1
- 2.Bg7#
- 1...Re1
- 2.Bg7#
- 1...Rf1
- 2.Bg7#
- 1...Rh1
- 2.Bg7#
- 1...Rg7
- 2.Bxg7#
- 1...f1Q
- 2.Qxd2#
- 1...f1B
- 2.Qxd2#
- 1...f1R
- 2.Qxd2#
- 1...a4
- 2.Bb4#
- 1...Ra1
- Tries
- 1.Sb4?
- 1...axb4
- 2.Bxb4#
- 1...cxb5
- 2.Sed5#
- 2.Sbd5#
- 1...b1Q
- 2.Qxd2#
- 1...b1S
- 2.Rc2#
- 1...b1B
- 2.Qxd2#
- 1...b1R
- 2.Rc2#
- 2.Qxd2#
- 1...d1Q
- 2.Qxb2#
- 1...d1S
- 2.Qc2#
- 1...d1B
- 2.Qxb2#
- 1...d1R
- 2.Qxb2#
- 2.Qc2#
- 1...f1Q
- 2.Qxd2#
- 1...f1S
- 2.Sd1#
- 1...f1B
- 2.Sd1#
- 2.Qxd2#
- 1...f1R
- 2.Qxd2#
- 1...Ra1
- 2.Bg7#
- 1...Rb1
- 2.Bg7#
- 1...Rc1
- 2.Bg7#
- 1...Rd1
- 2.Sxd1#
- 2.Bg7#
- 1...Re1
- 2.Bg7#
- 1...Rf1
- 2.Bg7#
- 1...Rh1
- 2.Bg7#
- 1...Rg2
- 2.Sd1#
- 1...Rg3
- 2.Sd1#
- 1...Rg4
- 2.Sd1#
- 1...Rg5
- 2.Sd1#
- 1...Rg6
- 2.Sd1#
- 1...Rg7
- 2.Sd1#
- 2.Bxg7#
- 1...Rg8
- 2.Sd1#
- 1...c5
- 2.Sed5#
- 2.Sbd5#
- 1...a4!
- 1...axb4
- 1.Sb4?
- Keys
- 1.Sa1!
- 1...Rxa1
- 2.Bg7#
- 1...bxa1Q
- 2.Rc2#
- 2.Qxd2#
- 1...bxa1S
- 2.Qxd2#
- 1...bxa1B
- 2.Rc2#
- 2.Qxd2#
- 1...bxa1R
- 2.Rc2#
- 2.Qxd2#
- 1...cxb5
- 2.Sd5#
- 1...b1Q
- 2.Qxd2#
- 1...b1S
- 2.Rc2#
- 1...b1B
- 2.Qxd2#
- 1...b1R
- 2.Rc2#
- 2.Qxd2#
- 1...d1Q
- 2.Qxb2#
- 1...d1S
- 2.Qc2#
- 1...d1B
- 2.Qxb2#
- 1...d1R
- 2.Qxb2#
- 2.Qc2#
- 1...f1Q
- 2.Qxd2#
- 1...f1S
- 2.Sd1#
- 1...f1B
- 2.Sd1#
- 2.Qxd2#
- 1...f1R
- 2.Qxd2#
- 1...Rb1
- 2.Bg7#
- 1...Rc1
- 2.Bg7#
- 1...Rd1
- 2.Sxd1#
- 2.Bg7#
- 1...Re1
- 2.Bg7#
- 1...Rf1
- 2.Bg7#
- 1...Rh1
- 2.Bg7#
- 1...Rg2
- 2.Sd1#
- 1...Rg3
- 2.Sd1#
- 1...Rg4
- 2.Sd1#
- 1...Rg5
- 2.Sd1#
- 1...Rg6
- 2.Sd1#
- 1...Rg7
- 2.Sd1#
- 2.Bxg7#
- 1...Rg8
- 2.Sd1#
- 1...a4
- 2.Bb4#
- 1...c5
- 2.Sd5#
- 1...Rxa1
- 1.Sa1!
There are these versions: 53215
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 16
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::B(L)
- R(a);N_GUARD::B(L),XR(a)
- P(d);::QAB1(C),XP(c)
- P(f);N_GUARD::B(L)
- Tries
- Try
- S(B);
- Vars
- P(f);OGATE,XS(B)::B(L),XP(f)
- P(b);P_PINP(F)::QAB1(C),XP(c)
- P(b);OGATE::R1(A)
- P(c);OGATE::QAB1(C),XP(b)
- P(c);OGATE::QAR1(C)
- P(d);::QAB1(C),XP(c)
- P(d);S_CUTR(a)::S(G)
- R(a);N_GUARD::B(L)
- R(a);N_GUARD::S(G)
- R(a);N_GUARD,P_PINP(J)::S(G)
- Refutation
- P(f);
- Try
- Actual
- S(B);
- Vars
- R(a);N_GUARD,XS(B)::B(L)
- P(b);XS(B)::QAB1(C),XP(c)
- P(h);N_GUARD,XP(K)::S(G)
- P(b);P_PINP(F)::QAB1(C),XP(c)
- P(b);OGATE::R1(A)
- P(c);OGATE::QAB1(C),XP(b)
- P(c);OGATE::QAR1(C)
- P(d);::QAB1(C),XP(c)
- P(d);S_CUTR(a)::S(G)
- R(a);N_GUARD::B(L)
- R(a);N_GUARD::S(G)
- R(a);N_GUARD,P_PINP(J)::S(G)
- P(f);N_GUARD::B(L)
- P(h);N_GUARD::S(G)
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