MESON Chess Problem Database
Problem Display
PID: 101159 (2N4n/2p3n1/2Kp1k2/2PQ3p/1pB2B1b/1P4R1/6P1/8 w - - 0 1)
Niemeijer, Meindert
Good Companions, 1920
#2
9 + 8
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Bxg3
- 2.Qg5#
- 1...Bg5
- 2.Qxg5#
- 1...Sf5
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...dxc5
- 2.Qe5#
- 1...Bxg3
- Tries
- 1.Kb5?
- 1...Bxg3
- 2.Qg5#
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...c6+!
- 1...Bxg3
- 1.Kb7?
- 1...Bxg3
- 2.Qg5#
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...c6!
- 1...Bxg3
- 1.Kxc7?
- 1...Se6+
- 2.Qxe6#
- 1...Bxg3
- 2.Qg5#
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Sf5
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...Se8+!
- 1...Se6+
- 1.Kd7?
- 1...Bxg3
- 2.Qg5#
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...c6!
- 1...Bxg3
- 1.Sa7?
- 1...Bxg3
- 2.Qg5#
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...Ke7!
- 1...Bxg3
- 1.Se7?
- threat
- 2.Sg8#
- 1...Bxg3
- 2.Bg5#
- 2.Qg5#
- 1...Se6
- 2.Qxe6#
- 1...Bg5
- 2.Bxg5#
- 2.Qxg5#
- 1...Kxe7!
- threat
- 1.Be5+?
- 1...Kf5
- 2.Bd3#
- 1...dxe5!
- 1...Kf5
- 1.Bg5+?
- 1...Bxg5
- 2.Qxg5#
- 1...Kg6!
- 1...Bxg5
- 1.Bh6?
- threat
- 2.Bxg7#
- 1...Bxg3
- 2.Qg5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sg6!
- threat
- 1.Rg4?
- 1...dxc5
- 2.Qe5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sg6
- 2.Qf7#
- 1...Be1
- 2.Qg5#
- 1...Bf2
- 2.Qg5#
- 1...Bg3
- 2.Qg5#
- 1...Sf5
- 2.Qe6#
- 1...Se8
- 2.Qe6#
- 1...Sf7
- 2.Qxf7#
- 1...hxg4!
- 1...dxc5
- 1.Rg5?
- threat
- 2.Qd4#
- 1...Bxg5
- 2.Qxg5#
- 1...dxc5
- 2.Qe5#
- 2.Qd8#
- 1...Se6
- 2.Qxe6#
- 2.Qf5#
- 1...Sg6
- 2.Qf7#
- 1...Sf5
- 2.Qe6#
- 2.Qxf5#
- 1...Sf7
- 2.Qxf7#
- 1...Bf2!
- threat
- 1.Rg6+?
- 1...Sxg6
- 2.Qf7#
- 1...Kxg6!
- 1...Sxg6
- 1.Rxg7?
- 1...dxc5
- 2.Qe5#
- 1...Sg6
- 2.Rf7#
- 2.Qf7#
- 1...Be1
- 2.Qg5#
- 1...Bf2
- 2.Qg5#
- 1...Bg3
- 2.Qg5#
- 1...Bg5
- 2.Qxg5#
- 1...Sf7
- 2.Qxf7#
- 1...Kxg7!
- 1...dxc5
- 1.Qxd6+?
- 1...Kf5
- 2.Bd3#
- 2.Qe5#
- 1...Se6
- 2.Qxe6#
- 1...cxd6!
- 1...Kf5
- 1.cxd6?
- threat
- 2.Qe5#
- 1...Bxg3
- 2.Qg5#
- 1...Bg5
- 2.Qxg5#
- 1...Se6
- 2.Qxe6#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...cxd6!
- threat
- 1.Kb5?
- Keys
- 1.Bd3!
- 1...Bxg3
- 2.Bg5#
- 1...dxc5
- 2.Be5#
- 1...Se6
- 2.Qf5#
- 1...Bg5
- 2.Bxg5#
- 1...Sf5
- 2.Qxf5#
- 1...Se8
- 2.Qf5#
- 1...Sg6
- 2.Rxg6#
- 1...Sf7
- 2.Rg6#
- 1...Bxg3
- 1.Bd3!
Anticipated by 71380(1920)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD,XR(C)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- P(d);N_GUARD,XP(F)::QAB1(G)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- P(f);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- P(f);
- Try
- K(H);P-FLIGHT,XP(f)
- Vars
- S(g);CHECK,N_GUARD::QAR1(G),XS(g)
- B(b);N_GUARD,XR(C)::QAB1(G)
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- S(g);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- P(f);
- Try
- S(I);
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- K(e);S_FLIGHT
- Try
- S(I);
- Threat
- S(I)
- Vars
- S(g);N_GUARD::QAR1(G),XS(g)
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- B(E);CHECK
- Vars
- K(e);P-FLIGHT::B(D)
- Refutation
- P(d);XB(E)
- Try
- B(E);CHECK
- Vars
- B(b);OGATE,XB(E)::QAB1(G),XB(b)
- Refutation
- K(e);P-FLIGHT
- Try
- B(E);
- Threat
- B(E),XS(g)
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- Refutation
- S(h);
- Try
- R(C);
- Vars
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(h);N_GUARD::QAR1(G)
- B(b);N_GUARD::QAB1(G)
- S(g);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- P(c);XR(C)
- Try
- R(C);
- Threat
- QAB(G)
- Vars
- B(b);OGATE,XR(C)::QAB1(G),XB(b)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- B(b);
- Try
- R(C);CHECK
- Vars
- S(h);XR(C)::QAR1(G)
- Refutation
- K(e);P-FLIGHT,XR(C)
- Try
- R(C);XS(g)
- Vars
- P(d);N_GUARD,XP(F)::QAB1(G)
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- K(e);S_FLIGHT,XR(C)
- Try
- Q(G);CHECK,XP(d)
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(G),XS(g)
- Refutation
- P(f);XQ(G)
- Try
- P(F);XP(d)
- Threat
- QAB1(G)
- Vars
- B(b);N_GUARD,XR(C)::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(h);N_GUARD::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
- Refutation
- P(f);XP(F)
- Try
- Actual
- B(D);
- Vars
- B(b);N_GUARD,XR(C)::B(E)
- P(d);N_GUARD,XP(F)::B(E)
- S(g);N_GUARD::QAR1(G)
- B(b);N_GUARD::B(E),XB(b)
- S(g);N_GUARD::QAR1(G),XS(g)
- S(h);N_GUARD::R1(C),XS(h)
- S(h);N_GUARD::R1(C)
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).