MESON Chess Problem Database
Problem Display
PID: 21536 (Kb4n1/8/1R6/1B1k4/NR6/1nQp4/8/7b w - - 0 1)
Larsen, Karl Adolf Koefoed
1st HM., Good Companions (October Meredith Ty.), 1919
#2
6 + 6
| 3132 | The Good Companion Two-Mover | 1922 |
| 3310 | 2345 Chess Problems | 1997 |
| 136 | Problem Observer | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.Bc4#
- 1...Be5
- 2.Qxb3#
- 2.Qc4#
- 2.Qc6#
- 1...Sa1
- 2.Qd4#
- 2.Qc5#
- 1...Sc1
- 2.Qd4#
- 2.Qc5#
- 1...Sd2
- 2.Qd4#
- 2.Qc5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 2.Qc5#
- 1...Sc5
- 2.Qd4#
- 2.Qxc5#
- 1...Be4
- Tries
- 1.Bd7?
- threat
- 2.Be6#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 2.Qxc5#
- 1...Bd6!
- threat
- 1.Be8?
- threat
- 2.Bf7#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 2.Qxc5#
- 1...Sh6!
- threat
- 1.Re4?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...Bxe4
- 2.Bc4#
- 1...Sd2
- 2.Qd4#
- 2.Qxd3#
- 2.Qc6#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 2.Qxd3#
- 1...Sc5
- 2.Qd4#
- 2.Qc4#
- 1...Se7
- 2.Qc4#
- 1...Kxe4!
- threat
- 1.Rf4?
- threat
- 2.Bc4#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Sd2
- 2.Qd4#
- 2.Qc5#
- 1...Sa5
- 2.Qd4#
- 2.Qc5#
- 1...Bxf4!
- threat
- 1.Rg4?
- threat
- 2.Bc4#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Sd2
- 2.Qd4#
- 2.Qc5#
- 1...Sa5
- 2.Qd4#
- 2.Qc5#
- 1...Bf4!
- threat
- 1.Rh4?
- threat
- 2.Bc4#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Sd2
- 2.Qd4#
- 2.Qc5#
- 1...Sa5
- 2.Qd4#
- 2.Qc5#
- 1...Bf4!
- threat
- 1.Rf6?
- threat
- 2.Sb6#
- 2.Bc6#
- 1...Sd4
- 2.Qxd4#
- 1...Ba7
- 2.Bc6#
- 1...Bc7
- 2.Bc6#
- 1...Sa5
- 2.Sb6#
- 2.Qd4#
- 2.Qc5#
- 1...Se7
- 2.Sb6#
- 1...Sxf6!
- threat
- 1.Rg6?
- threat
- 2.Sb6#
- 2.Bc6#
- 1...Sd4
- 2.Qxd4#
- 1...Ba7
- 2.Bc6#
- 1...Bc7
- 2.Bc6#
- 1...Sa5
- 2.Sb6#
- 2.Qd4#
- 2.Qc5#
- 1...Se7
- 2.Sb6#
- 1...Sf6!
- threat
- 1.Qf6?
- threat
- 2.Bc6#
- 2.Qe6#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bd6
- 2.Bc6#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sa5
- 2.Rd4#
- 2.Qd4#
- 2.Qe6#
- 1...Sc5
- 2.Sc3#
- 2.Bc6#
- 2.Rd4#
- 2.Qd4#
- 1...Se7
- 2.Qe6#
- 1...Sxf6!
- threat
- 1.Qxd3+?
- 1...Sd4
- 2.Qxd4#
- 1...Ke5+!
- 1...Sd4
- 1.Bd7?
- Keys
- 1.Qe1!
- threat
- 2.Qe6#
- 1...Be4
- 2.Qxe4#
- 1...Be5
- 2.Qxh1#
- 1...Bd6
- 2.Bc6#
- 1...Sd4
- 2.Bc4#
- 1...Sc5
- 2.Sc3#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(a);SBLOCK::B(D)
- S(b);N_GUARD::QAR1(A),XS(b)
- Tries
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(b);N_GUARD::QAR1(A),XS(b)
- Refutation
- B(e);
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(b);N_GUARD::QAR1(A),XS(b)
- Refutation
- S(f);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);SBLOCK,XR(C)::B(D)
- S(b);N_GUARD::QAR1(A),XS(b)
- S(f);::QAB1(A)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- R(C);
- Threat
- B(D)
- Refutation
- B(e);XR(C)
- Try
- R(C);
- Threat
- B(D)
- Refutation
- B(e);
- Try
- R(C);
- Threat
- B(D)
- Refutation
- B(e);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAR1(A),XS(b)
- B(e);::B(D)
- S(f);::S(B)
- Refutation
- S(f);XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAR1(A),XS(b)
- B(e);::B(D)
- S(f);::S(B)
- Refutation
- S(f);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(f);::QAB1(A)
- Refutation
- S(f);XQ(A)
- Try
- Q(A);CHECK,XP(c)
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
- Refutation
- K(d);CHECK,P-FLIGHT
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- B(a);N_GUARD::QAB1(A),XB(a)
- B(e);SBLOCK::QAB(A),XB(a)
- B(e);SBLOCK::B(D)
- S(b);SBLOCK::B(D)
- S(b);SBLOCK::S(B)
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