MESON Chess Problem Database
Problem Display
PID: 99997 (8/2p5/2p5/K1Bb1Qp1/4p1Pb/6pR/n1B1kp1N/1N1R3n w - - 0 1)
Zilahi, Zoltan
Magyar Sakkvilag, 1928
#2
9 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bb3
- 2.Qxe4#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...gxh2
- 2.Re3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qd3#
- 1...Bb3
- Tries
- 1.Ka4?
- 1...Sc3+
- 2.Sxc3#
- 1...gxh2
- 2.Re3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qd3#
- 1...Bb3+!
- 1...Sc3+
- 1.Sf1?
- 1...Sc1
- 2.Sc3#
- 1...Bb3
- 2.Qxe4#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3!
- 1...Sc1
- 1.Bb3?
- 1...gxh2
- 2.Re3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Sc1
- 2.Sc3#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qc2#
- 2.Qd3#
- 1...Bxb3!
- 1...gxh2
- 1.Bd3+?
- 1...exd3
- 2.Qxd3#
- 1...Kxd1!
- 1...exd3
- 1.Ba4?
- 1...gxh2
- 2.Re3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Sc1
- 2.Sc3#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qc2#
- 2.Qd3#
- 1...Bb3!
- 1...gxh2
- 1.Bd4?
- 1...gxh2
- 2.Re3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Sc1
- 2.Sc3#
- 1...Bb3
- 2.Qxe4#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qd3#
- 1...c5!
- 1...gxh2
- 1.Ba7?
- 1...gxh2
- 2.Re3#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Sc1
- 2.Sc3#
- 1...Bb3
- 2.Qxe4#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Re3#
- 1...e3
- 2.Qd3#
- 1...c5!
- 1...gxh2
- 1.Rxg3?
- threat
- 2.Re3#
- 1...Sxg3
- 2.Qxf2#
- 1...f1S
- 2.Qxf1#
- 1...e3
- 2.Rxe3#
- 2.Qd3#
- 1...Bxg3!
- threat
- 1.Qxf2+?
- 1...gxf2
- 2.Re3#
- 1...Sxf2!
- 1...gxf2
- 1.Qf4?
- threat
- 2.Qd2#
- 2.Qe3#
- 1...f1S
- 2.Qxf1#
- 1...e3
- 2.Qxe3#
- 1...gxf4!
- threat
- 1.Qxd5?
- threat
- 2.Qc4#
- 2.Qxe4#
- 2.Qd2#
- 1...f1S
- 2.Qc4#
- 1...Sc3
- 2.Sxc3#
- 2.Qc4#
- 2.Qd2#
- 1...Sc1
- 2.Sc3#
- 2.Qxe4#
- 2.Qd2#
- 1...Sb4
- 2.Sc3#
- 2.Qxe4#
- 2.Qd2#
- 1...e3
- 2.Qf3#
- 2.Qc4#
- 2.Qd3#
- 1...cxd5!
- threat
- 1.Ka4?
- Keys
- 1.Sf3!
- 1...exf3
- 2.Qd3#
- 1...f1Q
- 2.Rd2#
- 1...f1S
- 2.Sg1#
- 2.Re1#
- 1...f1B
- 2.Sg1#
- 2.Re1#
- 2.Rd2#
- 1...f1R
- 2.Rd2#
- 1...Sc1
- 2.Sc3#
- 1...Bb3
- 2.Qxe4#
- 1...Bc4
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Bf7
- 2.Qxe4#
- 1...Bg8
- 2.Qxe4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...g2
- 2.Sd4#
- 1...e3
- 2.Sd4#
- 1...exf3
- 1.Sf3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- P(e);OGATE,XS(D)::R1(E)
- P(e);OGATE::R1(E)
- P(f);OGATE::QAB1(I)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::S(A),XS(b)
- P(e);OGATE,XS(D)::R1(E)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A)
- P(e);OGATE::R1(E)
- P(f);OGATE::QAB1(I)
- Refutation
- B(h);CHECK
- Try
- S(D);
- Vars
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);OGATE::R1(E)
- Refutation
- P(f);
- Try
- B(C);
- Vars
- P(e);OGATE,XS(D)::R1(E)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);OGATE::R1(E)
- Refutation
- B(h);XB(C)
- Try
- B(C);CHECK
- Vars
- P(f);OGATE,XB(C)::QAB1(I),XP(f)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- B(C);
- Vars
- P(e);OGATE,XS(D)::R1(E)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);OGATE::R1(E)
- Refutation
- B(h);
- Try
- B(H);
- Vars
- P(e);OGATE,XS(D)::R1(E)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);OGATE::R1(E)
- P(f);OGATE::QAB1(I)
- Refutation
- P(j);
- Try
- B(H);
- Vars
- P(e);OGATE,XS(D)::R1(E)
- P(d);OGATE::QAB1(I),XQ(d)
- P(d);OGATE::QAB1(I),XS(d)
- P(d);OGATE::QAB1(I),XB(d)
- P(d);OGATE::QAB1(I),XR(d)
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);OGATE::R1(E)
- P(f);OGATE::QAB1(I)
- Refutation
- P(j);
- Try
- R(E);XP(e)
- Threat
- R1(E)
- Vars
- S(a);N_GUARD,XR(E)::QAR1(I),XP(d)
- P(d);OGATE::QAB1(I),XS(d)
- Refutation
- B(g);XR(E)
- Try
- Q(I);CHECK,XP(d)
- Vars
- P(e);OGATE,SBLOCK,XQ(I)::R1(E)
- Refutation
- S(a);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(d);OGATE::QAB1(I),XS(d)
- P(f);::QAR1(I),XP(f)
- Refutation
- P(i);XQ(I)
- Try
- Q(I);XB(h)
- Threat
- DUALS(3)
- Vars
- P(d);::QAB(I)
- Refutation
- P(j);XQ(I)
- Try
- Actual
- S(D);
- Vars
- P(f);OGATE,XS(D)::QAB1(I)
- P(d);SBLOCK::R1(B)
- S(b);N_GUARD::S(A)
- B(h);N_GUARD::QAR2(I),XP(f)
- S(b);N_GUARD::S(A),XS(b)
- P(e);::S(D)
- P(f);SBLOCK::S(D)
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).