MESON Chess Problem Database
Problem Display
PID: 189507 (4n3/8/1N1PNp2/2p2k1K/1R2b3/Q7/5n1B/4R3 w - - 0 1)
Pollak, Hans
Das Interessante Blatt, 1911
#2
8 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Rf4#
- 2.Qf3#
- 1...Bh1
- 2.Rf4#
- 1...Bc2
- 2.Rf4#
- 2.Qf3#
- 1...Bg2
- 2.Rf4#
- 1...Bd3
- 2.Rf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Bd5
- 2.Rf4#
- 1...Bc6
- 2.Rf4#
- 1...Bb7
- 2.Rf4#
- 1...Ba8
- 2.Rf4#
- 1...Sd1
- 2.Qh3#
- 1...Sh1
- 2.Qh3#
- 1...Sh3
- 2.Qxh3#
- 1...Sxd6
- 2.Sg7#
- 1...Sc7
- 2.Sg7#
- 1...Sg7+
- 2.Sxg7#
- 1...cxb4
- 2.Sd4#
- 1...c4
- 2.Sd4#
- 1...Bb1
- Tries
- 1.Rexe4?
- threat
- 2.Qf3#
- 1...Sg7+
- 2.Sxg7#
- 1...Sxe4
- 2.Qh3#
- 1...Sh3
- 2.Qxh3#
- 1...Sd3!
- threat
- 1.Rbxe4?
- threat
- 2.Rf4#
- 2.Qxc5#
- 2.Qf3#
- 1...Sg7+
- 2.Sxg7#
- 1...Sxe4
- 2.Qh3#
- 1...Sh3
- 2.Qxc5#
- 2.Qxh3#
- 1...Sg4
- 2.Rf4#
- 2.Qf3#
- 1...Sc7
- 2.Sg7#
- 2.Rf4#
- 2.Qf3#
- 1...c4
- 2.Sd4#
- 2.Rf4#
- 2.Qc5#
- 2.Qf3#
- 2.Qa5#
- 1...Sd3!
- threat
- 1.Qd3?
- 1...Sg7+
- 2.Sxg7#
- 1...Kxe6
- 2.Qd5#
- 1...Bxd3
- 2.Rf4#
- 1...Sxd6
- 2.Sg7#
- 1...cxb4
- 2.Sd4#
- 1...Sd1
- 2.Qxe4#
- 2.Qh3#
- 1...Sh1
- 2.Qxe4#
- 2.Qh3#
- 1...Sh3
- 2.Qxe4#
- 2.Qxh3#
- 1...Sg4
- 2.Qxe4#
- 1...Sc7
- 2.Sg7#
- 1...c4
- 2.Sd4#
- 1...Sxd3!
- 1...Sg7+
- 1.Qe3?
- 1...Bf3+
- 2.Qxf3#
- 1...Sg7+
- 2.Sxg7#
- 1...Sxd6
- 2.Sg7#
- 1...cxb4
- 2.Sd4#
- 1...Sd3
- 2.Qh3#
- 2.Qxe4#
- 1...Bb1
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qxc5#
- 2.Qf3#
- 1...Bh1
- 2.Rf4#
- 2.Qf4#
- 1...Bc2
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qxc5#
- 2.Qf3#
- 1...Bg2
- 2.Rf4#
- 2.Qf4#
- 1...Bd3
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qxc5#
- 2.Qf3#
- 1...Bd5
- 2.Rf4#
- 2.Qf4#
- 1...Bc6
- 2.Rf4#
- 2.Qf4#
- 1...Bb7
- 2.Rf4#
- 2.Qf4#
- 1...Ba8
- 2.Rf4#
- 2.Qf4#
- 1...Sd1
- 2.Qh3#
- 2.Qxe4#
- 1...Sh1
- 2.Qh3#
- 2.Qxe4#
- 1...Sh3
- 2.Qxh3#
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sc7
- 2.Sg7#
- 1...c4
- 2.Sd4#
- 1...Kxe6!
- 1...Bf3+
- 1.Qg3?
- 1...Bf3+
- 2.Qxf3#
- 1...Sg7+
- 2.Sxg7#
- 1...Sxd6
- 2.Sg7#
- 1...cxb4
- 2.Sd4#
- 1...Sd3
- 2.Qh3#
- 2.Qg4#
- 1...Bb1
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qf3#
- 2.Qg6#
- 1...Bh1
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Bc2
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qf3#
- 2.Qg6#
- 1...Bg2
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Bd3
- 2.Rf4#
- 2.Qxf2#
- 2.Qf4#
- 2.Qf3#
- 2.Qg6#
- 1...Bd5
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Bc6
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Bb7
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Ba8
- 2.Rf4#
- 2.Qf4#
- 2.Qg6#
- 1...Sd1
- 2.Qh3#
- 2.Qg4#
- 1...Sh1
- 2.Qh3#
- 2.Qg4#
- 1...Sh3
- 2.Qxh3#
- 2.Qg4#
- 1...Sg4
- 2.Qxg4#
- 1...Sc7
- 2.Sg7#
- 1...c4
- 2.Sd4#
- 1...Kxe6!
- 1...Bf3+
- 1.Qh3+?
- 1...Sg4
- 2.Qxg4#
- 1...Sxh3!
- 1...Sg4
- 1.Rexe4?
- Keys
- 1.Qa8!
- 1...Bf3+
- 2.Qxf3#
- 1...Sg7+
- 2.Sxg7#
- 1...Kxe6
- 2.Qd5#
- 1...Bxa8
- 2.Rf4#
- 1...Sxd6
- 2.Sg7#
- 1...cxb4
- 2.Sd4#
- 1...Sd3
- 2.Qxe4#
- 1...Bb1
- 2.Rf4#
- 2.Qf3#
- 2.Qd5#
- 1...Bh1
- 2.Rf4#
- 1...Bc2
- 2.Rf4#
- 2.Qf3#
- 2.Qd5#
- 1...Bg2
- 2.Rf4#
- 1...Bd3
- 2.Rf4#
- 2.Qf3#
- 2.Qd5#
- 1...Bd5
- 2.Rf4#
- 2.Qxd5#
- 1...Bc6
- 2.Rf4#
- 1...Bb7
- 2.Rf4#
- 1...Sd1
- 2.Qxe4#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sc7
- 2.Sg7#
- 1...c4
- 2.Sd4#
- 1...Bf3+
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(b);OGATE::R1(D)
- B(b);CHECK,N_GUARD::QAR2(C),XB(b)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(f);N_GUARD,XP(G)::S(H)
- S(f);N_GUARD::S(H)
- S(f);CHECK,N_GUARD::S(H),XS(f)
- P(c);N_GUARD,XR(D)::S(H)
- P(c);N_GUARD::S(H)
- Tries
- Try
- R(A);XB(b)
- Threat
- QAR2(C)
- Vars
- S(f);CHECK,N_GUARD::S(H),XS(f)
- S(a);N_GUARD,XR(A)::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- Refutation
- S(a);
- Try
- R(D);XB(b)
- Threat
- DUALS(3)
- Vars
- S(f);CHECK,N_GUARD::S(H),XS(f)
- S(a);N_GUARD,XR(D)::QAB(C)
- Refutation
- S(a);
- Try
- Q(C);P_PINB(b)
- Vars
- S(f);CHECK,N_GUARD::S(H),XS(f)
- K(d);S_FLIGHT,XS(H)::QAB1(C)
- B(b);N_SPINB(b),OGATE,XQ(C)::R1(D)
- S(f);N_GUARD,XP(G)::S(H)
- P(c);N_GUARD,XR(D)::S(H)
- S(a);N_GUARD::QAB1(C),XB(b)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::S(H)
- Refutation
- S(a);N_SPINB(b),XQ(C)
- Try
- Q(C);
- Vars
- B(b);CHECK,N_GUARD::QAR2(C),XB(b)
- S(f);CHECK,N_GUARD::S(H),XS(f)
- S(f);N_GUARD,XP(G)::S(H)
- P(c);N_GUARD,XR(D)::S(H)
- S(a);N_GUARD::QAB1(C),XB(b)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::S(H)
- Refutation
- K(d);P_SPINB(b),S_FLIGHT,XS(H)
- Try
- Q(C);
- Vars
- B(b);CHECK,N_GUARD::QAR2(C),XB(b)
- S(f);CHECK,N_GUARD::S(H),XS(f)
- S(f);N_GUARD,XP(G)::S(H)
- P(c);N_GUARD,XR(D)::S(H)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::S(H)
- Refutation
- K(d);P_SPINB(b),S_FLIGHT,XS(H)
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- Actual
- Q(C);
- Vars
- B(b);CHECK,OGATE::QAR2(C),XB(b)
- S(f);CHECK,N_GUARD::S(H),XS(f)
- K(d);P_SPINB(b),S_FLIGHT,XS(H)::QAB1(C)
- B(b);OGATE,XQ(C)::R1(D)
- S(f);N_GUARD,XP(G)::S(H)
- P(c);N_GUARD,XR(D)::S(H)
- S(a);N_GUARD::QAB1(C),XB(b)
- B(b);OGATE::R1(D)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::S(H)
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).