MESON Chess Problem Database
Problem Display
PID: 101015 (2n1N3/3B2p1/n7/1p1k1pK1/NPppp3/3P3p/4Q2B/8 w - - 0 1)
Janet, Frank
Good Companions (December), 1916
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxb4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...cxd3
- 2.Qa2#
- 1...c3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...e3
- 2.Qf3#
- 1...bxa4
- 2.dxc4#
- 1...f4
- 2.Qxe4#
- 1...g6
- 2.Sf6#
- 1...Sxb4
- Tries
- 1.Kh4?
- 1...Sxb4
- 2.Sc7#
- 1...cxd3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...bxa4
- 2.dxc4#
- 1...f4
- 2.Qxe4#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qf3#
- 1...g6
- 2.Sf6#
- 1...g5+!
- 1...Sxb4
- 1.Kh5?
- 1...Sxb4
- 2.Sc7#
- 1...cxd3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...bxa4
- 2.dxc4#
- 1...f4
- 2.Qxe4#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qf3#
- 1...g5
- 2.Sf6#
- 1...g6+!
- 1...Sxb4
- 1.Kg6?
- 1...Sxb4
- 2.Sc7#
- 1...cxd3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...bxa4
- 2.dxc4#
- 1...f4
- 2.Qh5#
- 2.Qxe4#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qf3#
- 1...Se7+!
- 1...Sxb4
- 1.Bg3?
- 1...Sxb4
- 2.Sc7#
- 1...cxd3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...bxa4
- 2.dxc4#
- 1...f4
- 2.Qxe4#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qf3#
- 1...g6
- 2.Sf6#
- 1...h2!
- 1...Sxb4
- 1.Bf4?
- 1...Sxb4
- 2.Sc7#
- 1...cxd3
- 2.Qa2#
- 1...exd3
- 2.Qf3#
- 2.Qe5#
- 2.Qe6#
- 1...bxa4
- 2.dxc4#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sa7
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qf3#
- 1...g6
- 2.Sf6#
- 1...h2!
- 1...Sxb4
- 1.Qf2?
- threat
- 2.Qxf5#
- 1...cxd3
- 2.Qa2#
- 1...Sd6
- 2.Sb6#
- 1...Se7
- 2.Sb6#
- 1...g6
- 2.Sf6#
- 1...f4!
- threat
- 1.Kh4?
- Keys
- 1.Qh5!
- threat
- 2.Qf7#
- 1...exd3
- 2.Qf3#
- 1...f4
- 2.Kg6#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sd6
- 2.Sb6#
- 1...g6
- 2.Sf6#
- threat
- 1.Qh5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- S(h);N_GUARD,XP(E)::S(H)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB,XP(C)::QAB(A)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- P(g);N_GUARD::QAB1(A),XP(d)
- P(i);N_GUARD::S(H)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::S(H)
- P(b);OGATEB,XP(C)::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- P(g);N_GUARD::QAB1(A),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- P(i);N_GUARD::S(H)
- Refutation
- P(i);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::S(H)
- P(b);OGATEB,XP(C)::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- P(g);N_GUARD::QAB1(A),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- P(i);N_GUARD::S(H)
- Refutation
- P(i);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::S(H)
- P(b);OGATEB,XP(C)::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- Refutation
- S(j);CHECK
- Try
- B(B);
- Vars
- S(h);N_GUARD,XP(E)::S(H)
- P(b);OGATEB,XP(C)::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- P(g);N_GUARD::QAB1(A),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- P(i);N_GUARD::S(H)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- S(h);N_GUARD,XP(E)::S(H)
- P(b);OGATEB,XP(C)::QAB(A)
- P(e);N_GUARD,XS(D)::P(C),XP(b)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D),XS(j)
- S(j);N_GUARD::S(D)
- P(b);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- P(i);N_GUARD::S(H)
- Refutation
- P(a);
- Try
- Q(A);
- Threat
- QAR2(A),XP(g)
- Vars
- P(b);OGATEB,XP(C)::QAB(A)
- S(j);N_GUARD::S(D)
- P(i);N_GUARD::S(H)
- Refutation
- P(g);
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- P(d);OGATEB,XP(C)::QAB(A)
- P(g);::QAR(A)+K(F)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(j);N_GUARD::S(D)
- P(i);N_GUARD::S(H)
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