MESON Chess Problem Database
Problem Display
PID: 78469 (1n1rb3/5pKp/r2R1RPN/QP1Bk1P1/1P3N2/5P2/5B1b/2n3q1 w - - 0 1)
Haring, Jacobus
Comm., The Sun-Herald, 1961
#2
13 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sg4#
- 1...Qe1
- 2.Sg4#
- 1...Qf1
- 2.Sg4#
- 1...Qh1
- 2.Sg4#
- 1...Qg4
- 2.Sxg4#
- 1...Rb6
- 2.Qa1#
- 1...Raxd6
- 2.Rf5#
- 2.Qa1#
- 1...Rdxd6
- 2.Rf5#
- 1...Bg3
- 2.Sg4#
- 1...Bxb5
- 2.Sxf7#
- 1...Bc6
- 2.Sxf7#
- 1...Bd7
- 2.Sxf7#
- 1...Sa2
- 2.Sd3#
- 1...Se2
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Qd1
- Tries
- 1.Bxg1?
- threat
- 2.Sg4#
- 1...Bd7
- 2.Sxf7#
- 1...Bxg1!
- threat
- 1.Bd4+?
- 1...Qxd4
- 2.Sg4#
- 1...Kxd4!
- 1...Qxd4
- 1.Qb6?
- threat
- 2.Rf5#
- 2.Qe3#
- 2.Qd4#
- 1...Qxf2
- 2.Sg4#
- 2.Rf5#
- 1...Qxg5
- 2.Bd4#
- 2.Qe3#
- 2.Qd4#
- 1...Bxf4
- 2.Rf5#
- 2.Qd4#
- 1...fxg6
- 2.Rde6#
- 2.Qe3#
- 2.Qd4#
- 1...hxg6
- 2.Qe3#
- 2.Qd4#
- 1...Qd1
- 2.Sg4#
- 2.Rf5#
- 2.Qe3#
- 1...Qe1
- 2.Sg4#
- 2.Bd4#
- 2.Rf5#
- 2.Qd4#
- 1...Qg4
- 2.Sxg4#
- 2.Bd4#
- 2.Qe3#
- 2.Qd4#
- 1...Ra3
- 2.Rf5#
- 2.Qd4#
- 1...Bc6
- 2.Sxf7#
- 2.Qe3#
- 2.Qd4#
- 1...Bd7
- 2.Sxf7#
- 2.Qe3#
- 2.Qd4#
- 1...Se2
- 2.Sd3#
- 2.Rf5#
- 2.Qe3#
- 1...Sb3
- 2.Sd3#
- 2.Rf5#
- 2.Qe3#
- 1...Sc6
- 2.Qe3#
- 1...Rxb6!
- threat
- 1.Qc7?
- threat
- 2.Rde6#
- 2.Rf5#
- 2.Qc3#
- 2.Qe7#
- 1...Qxg5
- 2.Rde6#
- 2.Qc3#
- 2.Qe7#
- 1...Raxd6
- 2.Rf5#
- 2.Qc3#
- 1...Rdxd6
- 2.Rf5#
- 2.Qc3#
- 1...Bxf4
- 2.Rf5#
- 2.Qc3#
- 2.Qe7#
- 1...fxg6
- 2.Rde6#
- 2.Qc3#
- 2.Qe7#
- 1...hxg6
- 2.Rde6#
- 2.Qc3#
- 2.Qe7#
- 1...Qd1
- 2.Sg4#
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Qe1
- 2.Sg4#
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Qg4
- 2.Sxg4#
- 2.Rde6#
- 2.Qc3#
- 1...Ra3
- 2.Rde6#
- 2.Rd7#
- 2.Rxd8#
- 2.Rf5#
- 2.Qe7#
- 1...Rc6
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Ra7
- 2.Rde6#
- 2.Rf5#
- 2.Qc3#
- 1...Rd7
- 2.Rde6#
- 2.Rf5#
- 2.Qc3#
- 1...Rc8
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Bc6
- 2.Sxf7#
- 2.Rde6#
- 2.Rd7#
- 2.Rxd8#
- 2.Rf5#
- 2.Qe7#
- 1...Bd7
- 2.Sxf7#
- 2.Rxa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rde6#
- 2.Qc3#
- 1...Sa2
- 2.Sd3#
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Se2
- 2.Sd3#
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Sb3
- 2.Sd3#
- 2.Rde6#
- 2.Rf5#
- 2.Qe7#
- 1...Sc6
- 2.Rde6#
- 2.Rd7#
- 2.Rxd8#
- 2.Rf5#
- 1...Sd7
- 2.Rxa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rde6#
- 2.Rf5#
- 2.Qc3#
- 1...Qxf2!
- threat
- 1.Qxd8?
- threat
- 2.Rf5#
- 2.Qe7#
- 2.Qxe8#
- 1...Qxg5
- 2.Qe7#
- 2.Qxe8#
- 1...Rxd6
- 2.Rf5#
- 2.Qxd6#
- 1...Bxb5
- 2.Sxf7#
- 2.Rf5#
- 2.Qe7#
- 1...fxg6
- 2.Qe7#
- 2.Qxe8#
- 1...hxg6
- 2.Qe7#
- 2.Qxe8#
- 1...Qg4
- 2.Sxg4#
- 1...Ra7
- 2.Rf5#
- 1...Bc6
- 2.Sxf7#
- 2.Rf5#
- 2.Qe7#
- 1...Bd7
- 2.Sxf7#
- 1...Sc6
- 2.Rf5#
- 1...Sd7
- 2.Qe7#
- 2.Qxe8#
- 1...Qxf2!
- threat
- 1.bxa6?
- threat
- 2.Bc6#
- 2.Qa1#
- 1...Rxd6
- 2.Rf5#
- 2.Qa1#
- 1...Sxa6
- 2.Qa1#
- 1...Qd1
- 2.Sg4#
- 1...Qe1
- 2.Sg4#
- 2.Bc6#
- 1...Qf1
- 2.Sg4#
- 2.Qa1#
- 1...Rc8
- 2.Bc6#
- 1...Ba4
- 2.Sxf7#
- 1...Bb5
- 2.Sxf7#
- 2.Qa1#
- 1...Bc6
- 2.Sxf7#
- 2.Bxc6#
- 2.Qa1#
- 1...Sa2
- 2.Sd3#
- 2.Bc6#
- 1...Se2
- 2.Sd3#
- 2.Bc6#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sc6
- 2.Bxc6#
- 1...Sd7
- 2.Qa1#
- 1...Qxf2!
- threat
- 1.Bxg1?
- Keys
- 1.Bxf7!
- 1...Qxf2
- 2.Sg4#
- 1...Qxg5
- 2.Bd4#
- 1...Rxa5
- 2.Rde6#
- 1...Raxd6
- 2.Rf5#
- 1...Rdxd6
- 2.Rf5#
- 1...Bxf4
- 2.Rfe6#
- 1...Bxb5
- 2.Qxb5#
- 1...Bxf7
- 2.Sxf7#
- 1...hxg6
- 2.Sxg6#
- 1...Qd1
- 2.Sg4#
- 1...Qe1
- 2.Sg4#
- 2.Bd4#
- 1...Qf1
- 2.Sg4#
- 2.Bd4#
- 1...Qh1
- 2.Sg4#
- 2.Bd4#
- 1...Qg2
- 2.Bd4#
- 1...Qg3
- 2.Bd4#
- 1...Qg4
- 2.Sxg4#
- 2.Bd4#
- 1...Rb6
- 2.Qa1#
- 1...Rc6
- 2.bxc6#
- 1...Ra7
- 2.Rde6#
- 1...Ra8
- 2.Rde6#
- 1...Rd7
- 2.bxa6#
- 1...Rc8
- 2.Rd5#
- 1...Bg3
- 2.Sg4#
- 1...Bc6
- 2.Rde6#
- 1...Bd7
- 2.Rd5#
- 1...Sa2
- 2.Sd3#
- 1...Se2
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sc6
- 2.Rde6#
- 1...Sd7
- 2.Rd5#
- 1...Qxf2
- 1.Bxf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 16
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::S(L)
- Q(b);N_GUARD::S(L),XQ(b)
- R(e);N_GUARD::QAB(E)
- R(i);SBLOCK,XR(I)::R1(J)
- B(c);S_CUTQ(b)::S(L)
- B(j);N_GUARD,XP(F)::S(L),XP(f)
- B(j);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Tries
- Try
- B(A);XQ(b)
- Threat
- S(L)
- Vars
- B(j);N_GUARD::S(L),XP(f)
- Refutation
- B(c);XB(A)
- Try
- B(A);CHECK
- Vars
- Q(b);SBLOCK,XB(A)::S(L)
- Refutation
- K(d);S_FLIGHT,XB(A)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- S(h);::QAR2(E)
- Refutation
- R(e);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Refutation
- Q(b);XB(A)
- Try
- Q(E);XR(i)
- Threat
- DUALS(3)
- Vars
- Q(b);N_GUARD::S(L),XQ(b)
- R(e);::R1(J)
- B(j);N_GUARD::S(L),XP(f)
- S(h);::R1(J)
- Refutation
- Q(b);XB(A)
- Try
- P(F);XR(e)
- Threat
- DUALS(2)
- Vars
- S(h);XP(F)::QAB(E)
- Q(b);N_GUARD::S(L)
- R(i);::QAR(E)+B(G)
- B(j);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(h);::QAR(E)+B(G),XS(h)
- S(h);::QAB(E)
- Refutation
- Q(b);XB(A)
- Try
- Actual
- B(G);XP(f)
- Vars
- Q(b);N_GUARD,XB(A)::S(L)
- Q(b);N_GUARD,P_PINP(K),XP(H)::B(A)
- R(e);N_GUARD,XQ(E)::R1(I)
- R(e);SBLOCK,XR(I)::R1(J)
- R(i);SBLOCK,XR(I)::R1(J)
- B(c);SBLOCK,XS(D)::R1(J)
- B(j);OGATE,P_SPINB(j),XP(F)::QAR(E),XB(j)
- B(j);XB(G)::S(L),XB(j)
- P(g);XP(K)::S(D),XP(g)
- Q(b);N_GUARD::S(L)
- Q(b);N_GUARD::B(A)
- R(e);N_GUARD::QAB(E)
- R(e);OGATE::QAR(E)+P(F),XR(e)
- R(e);N_GUARD,P_PINB(G)::R1(I)
- R(e);N_GUARD::R1(I)
- R(i);P_PINB(G),S_CUTB(j)::QAR(E)+P(F),XR(e)
- R(i);N_GUARD::R1(I)
- B(c);S_CUTQ(b)::S(L)
- B(j);S_CUTR(e)::R1(I)
- B(j);S_CUTR(i)::R1(I)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(h);S_CUTR(e)::R1(I)
- S(h);S_CUTR(i)::R1(I)
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).