MESON Chess Problem Database
Problem Display
PID: 61379 (3n4/8/Kp1p1p2/2NrbP2/3k1p2/p5p1/bPRBQ1P1/5qN1 w - - 0 1)
Mikkelsen, Paul Helweg
Skakbladet, 1906
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxe2+
- 2.Sxe2#
- 1...Qxg2
- 2.Qd3#
- 1...Qa1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qb1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qc1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qd1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qxg1
- 2.Qd3#
- 2.Qe4#
- 1...Qf2
- 2.Qd3#
- 2.Qe4#
- 1...Qf3
- 2.Sxf3#
- 1...Bb1
- 2.Sb3#
- 2.Rc4#
- 1...Bb3
- 2.Sxb3#
- 1...Bc4+
- 2.Rxc4#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...f3
- 2.Be3#
- 1...bxc5
- 2.Bc3#
- 1...b5
- 2.Qe4#
- 1...dxc5
- 2.Bc3#
- 1...Qxe2+
- Tries
- 1.Kb5?
- threat
- 2.Bc3#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf3
- 2.Sxf3#
- 1...Rxc5+!
- threat
- 1.Kxb6?
- threat
- 2.Bc3#
- 2.Qe4#
- 1...Qxe2
- 2.Sxe2#
- 1...Qxg2
- 2.Bc3#
- 2.Qd3#
- 1...dxc5
- 2.Bc3#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf3
- 2.Sxf3#
- 1...Rxc5!
- threat
- 1.Bb4?
- threat
- 2.Rd2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qb1
- 2.Sf3#
- 2.Qd3#
- 2.Qd2#
- 2.Qe4#
- 1...Qc1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qd1
- 2.Sf3#
- 2.Qe4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf3
- 2.Sxf3#
- 1...Bb1
- 2.Sb3#
- 2.Rc4#
- 1...Qxe2+!
- threat
- 1.Bxf4?
- threat
- 2.Be3#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qxg1
- 2.Qd3#
- 2.Qd2#
- 2.Qe4#
- 1...Qxf4
- 2.Qd3#
- 1...Rxc5
- 2.Rd2#
- 1...bxc5
- 2.Rd2#
- 1...dxc5
- 2.Rd2#
- 1...Qc1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qf2
- 2.Qd3#
- 2.Qe4#
- 1...Qf3
- 2.Sxf3#
- 1...Bxf4!
- threat
- 1.bxa3?
- 1...Qxe2+
- 2.Sxe2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qxg2
- 2.Qd3#
- 1...Qxg1
- 2.Qd3#
- 2.Qe4#
- 1...bxc5
- 2.Bc3#
- 1...dxc5
- 2.Bc3#
- 1...Qa1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qb1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qc1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qd1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 2.Qe4#
- 1...Qf3
- 2.Sxf3#
- 1...Bb1
- 2.Sb3#
- 2.Rc4#
- 1...Bb3
- 2.Sxb3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...f3
- 2.Be3#
- 1...b5
- 2.Qe4#
- 1...Rxc5!
- 1...Qxe2+
- 1.b3?
- threat
- 2.Rc4#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bxb3
- 2.Sxb3#
- 1...Qc1
- 2.Sf3#
- 2.Qd3#
- 2.Qc4#
- 2.Qe4#
- 1...b5
- 2.Qe4#
- 1...Rxc5!
- threat
- 1.b4?
- threat
- 2.Bc3#
- 1...Qxe2+
- 2.Sxe2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qa1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf3
- 2.Sxf3#
- 1...Rxc5!
- threat
- 1.Kb5?
- Keys
- 1.Bc1!
- 1...Qxe2+
- 2.Sxe2#
- 1...Bc4+
- 2.Rxc4#
- 1...Qxg2
- 2.Qd3#
- 1...Qxc1
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qxg1
- 2.Qd3#
- 2.Qd2#
- 2.Qe4#
- 1...Rxc5
- 2.Rd2#
- 1...axb2
- 2.Bxb2#
- 1...bxc5
- 2.Rd2#
- 1...dxc5
- 2.Rd2#
- 1...Qd1
- 2.Sf3#
- 2.Qxd1#
- 2.Qe4#
- 1...Qe1
- 2.Sf3#
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 2.Qe4#
- 1...Qf3
- 2.Sxf3#
- 1...Bb1
- 2.Sb3#
- 2.Rc4#
- 1...Bb3
- 2.Sxb3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...f3
- 2.Be3#
- 1...b5
- 2.Qe4#
- 1...Qxe2+
- 1.Bc1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- Q(a);N_GUARD,N_PINQ(E),XP(F)::QAR1(E)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- B(b);N_GUARD::S(G),XB(b)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- S(l);N_GUARD::S(G)
- S(l);N_GUARD::S(G),XS(l)
- P(f);N_GUARD::B(D)
- P(i);SBLOCK,XS(G)::B(D)
- P(i);N_PINQ(E)::QAR1(E)
- P(j);SBLOCK,XS(G)::B(D)
- Tries
- Try
- K(I);P_SPINS(G),S_FLIGHT
- Threat
- B(D)
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- Refutation
- R(g);CHECK,XS(G)
- Try
- K(I);N_SPINQ(E),P-FLIGHT,XP(i)
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(E)::S(A),XQ(a)
- P(j);XS(G)::B(D)
- Q(a);N_GUARD::S(A),XQ(a)
- Refutation
- R(g);XS(G)
- Try
- B(D);
- Threat
- R(C)
- Vars
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- Refutation
- Q(a);CHECK,XQ(E)
- Try
- B(D);XP(f)
- Threat
- B(D)
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E),XB(D)::QAR1(E)
- R(g);SBLOCK,XS(G)::R(C)
- P(i);SBLOCK,XS(G)::R(C)
- P(j);SBLOCK,XS(G)::R(C)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- Refutation
- B(h);XB(D)
- Try
- P(B);XP(c)
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E),XP(F)::QAR1(E)
- P(i);SBLOCK,XS(G)::B(D)
- P(j);SBLOCK,XS(G)::B(D)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- B(b);N_GUARD::S(G),XB(b)
- S(l);N_GUARD::S(G)
- S(l);N_GUARD::S(G),XS(l)
- P(f);N_GUARD::B(D)
- P(i);N_PINQ(E)::QAR1(E)
- Refutation
- R(g);XS(G)
- Try
- P(B);
- Threat
- R1(C)
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);XP(B)::S(G),XB(b)
- P(i);N_PINQ(E)::QAR1(E)
- Refutation
- R(g);XS(G)
- Try
- P(B);
- Threat
- B(D)
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- Refutation
- R(g);XS(G)
- Try
- Actual
- B(D);
- Vars
- Q(a);CHECK,XQ(E)::S(A),XQ(a)
- B(b);CHECK,N_GUARD,N_PINQ(E)::R1(C),XB(b)
- Q(a);N_GUARD,N_PINQ(E),XP(F)::QAR1(E)
- R(g);SBLOCK,XS(G)::R(C)
- P(c);OGATE,XP(B)::B(D),XP(c)
- P(i);SBLOCK,XS(G)::R(C)
- P(j);SBLOCK,XS(G)::R(C)
- Q(a);N_GUARD,N_PINQ(E)::S(A),XQ(a)
- B(b);N_GUARD::S(G),XB(b)
- S(l);N_GUARD::S(G)
- S(l);N_GUARD::S(G),XS(l)
- P(f);N_GUARD::B(D)
- P(i);N_PINQ(E)::QAR1(E)
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).