MESON Chess Problem Database
Problem Display
PID: 64607 (5b2/3Qn1p1/4P1p1/4Pk2/p2pN1p1/Kn1B2B1/2N5/8 w - - 0 1)
Guidelli, Giorgio
Good Companions (April), 1916
#2
8 + 9
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Sxd4#
- 1...Sc1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...Sd5+
- 2.e7#
- 1...Sc6+
- 2.e7#
- 1...Sc8+
- 2.e7#
- 1...Sg8+
- 2.e7#
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sa1
- Tries
- 1.Kb2?
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sa1
- 2.Sxd4#
- 1...Sc1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...Sd5
- 2.e7#
- 1...Sc6
- 2.Qf7#
- 2.e7#
- 1...Sc8
- 2.Qf7#
- 2.e7#
- 1...Sg8
- 2.e7#
- 1...a3+!
- 1...g5
- 1.Kxa4?
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sa1
- 2.Sxd4#
- 1...Sc1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sd5
- 2.e7#
- 1...Sc6
- 2.Qf7#
- 2.e7#
- 1...Sc8
- 2.Qf7#
- 2.e7#
- 1...Sg8
- 2.e7#
- 1...Sc5+!
- 1...g5
- 1.Bh2?
- 1...Sd5+
- 2.e7#
- 1...Sc6+
- 2.e7#
- 1...Sc8+
- 2.e7#
- 1...Sg8+
- 2.e7#
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sc1
- 2.Sxd4#
- 1...Sa1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...g3!
- 1...Sd5+
- 1.Qc8?
- 1...Sd5+
- 2.e7#
- 1...Sc6+
- 2.e7#
- 1...Sg8+
- 2.e7#
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 1...Sc1
- 2.Sxd4#
- 1...Sa1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...Sxc8+!
- 1...Sd5+
- 1.Qxe7?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...g5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sxg5#
- 2.Sd6#
- 2.Sf6#
- 1...Sc1
- 2.Sxd4#
- 2.Sd6#
- 1...Sd2
- 2.Sxd4#
- 2.Sxd2#
- 2.Sd6#
- 1...Sc5
- 2.Sxd4#
- 2.Sxc5#
- 2.Sd6#
- 2.Qf7#
- 1...Bxe7+!
- threat
- 1.Kb2?
- Keys
- 1.Qd8!
- 1...Sd5+
- 2.Sc5#
- 1...Sc6+
- 2.Sc5#
- 1...Sc8+
- 2.Sc5#
- 1...Sg8+
- 2.Sc5#
- 1...Kxe6
- 2.Sg5#
- 1...g5
- 2.Sc5#
- 1...Sc1
- 2.Sxd4#
- 1...Sa1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...Sd5+
- 1.Qd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(A),XP(c)
- S(g);CHECK,OGATE::QAB(H)+P(G)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- S(a);N_GUARD::S(A),XP(c)
- S(g);OGATE::QAB(H)+P(G)
- Refutation
- P(b);CHECK
- Try
- K(B);P-FLIGHT,XP(b)
- Vars
- S(a);N_GUARD::S(A),XP(c)
- S(g);OGATE::QAB(H)+P(G)
- Refutation
- S(a);CHECK
- Try
- B(D);
- Vars
- S(g);CHECK,OGATE::QAB(H)+P(G)
- S(a);N_GUARD::S(A),XP(c)
- Refutation
- P(d);
- Try
- Q(H);
- Vars
- S(g);CHECK,OGATE::QAB(H)+P(G)
- S(a);N_GUARD::S(A),XP(c)
- Refutation
- S(g);CHECK,XQ(H)
- Try
- Q(H);P_SPINQ(H),XS(g)
- Threat
- DUALS(6)
- Refutation
- B(i);CHECK,XQ(H)
- Try
- Actual
- Q(H);
- Vars
- S(g);CHECK::B(C)+S(E)
- K(e);S_FLIGHT,XP(G)::S(E)
- P(f);SBLOCK::B(C)+S(E)
- S(a);N_GUARD::S(A),XP(c)
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