MESON Chess Problem Database
Problem Display
PID: 147319 (1Q6/1N1pp3/K3p3/NR1p2p1/3k1nnB/2R2P2/bPBP4/8 w - - 0 1)
Borovik, Boris V
Canadian Chess Chat, 1984
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Sb3#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...gxh4
- 2.Qxf4#
- 1...e5
- 2.Qa7#
- 1...d6
- 2.Sc6#
- 1...Bb1
- Tries
- 1.Sd8?
- 1...gxh4
- 2.Qxf4#
- 1...d6
- 2.Sac6#
- 2.Sdc6#
- 1...Bb1
- 2.Sb3#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 2.Qb6#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qa7#
- 2.Qb6#
- 1...Bc4!
- 1...gxh4
- 1.Bb1?
- 1...Bxb1
- 2.Sb3#
- 2.Rb4#
- 1...gxh4
- 2.Qxf4#
- 1...d6
- 2.Sc6#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qa7#
- 1...Bc4!
- 1...Bxb1
- 1.Bb3?
- threat
- 2.Rb4#
- 1...Bxb3
- 2.Sxb3#
- 1...d6
- 2.Sc6#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sd3!
- threat
- 1.Be1?
- 1...d6
- 2.Sc6#
- 1...Bb1
- 2.Sb3#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qa7#
- 1...Bc4!
- 1...d6
- 1.Bf2+?
- 1...Se3
- 2.Bxe3#
- 2.dxe3#
- 1...Sxf2!
- 1...Se3
- 1.Bg3?
- 1...d6
- 2.Sc6#
- 1...Bb1
- 2.Sb3#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 2.Qa7#
- 1...Sg2
- 2.Rd3#
- 2.Qa7#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 2.Qa7#
- 1...Sh5
- 2.Rd3#
- 2.Qa7#
- 1...Sg6
- 2.Rd3#
- 2.Qa7#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qa7#
- 1...Bc4!
- 1...d6
- 1.Re3?
- threat
- 2.Qa7#
- 1...Sd3
- 2.Rxd3#
- 1...Sxe3!
- threat
- 1.Rc4+?
- 1...dxc4
- 2.Qa7#
- 1...Bxc4!
- 1...dxc4
- 1.Qe5+?
- 1...Sxe5
- 2.Bf2#
- 1...Kxe5!
- 1...Sxe5
- 1.Qd6?
- 1...gxh4
- 2.Qxf4#
- 1...Bc4
- 2.Rxc4#
- 1...Bb1
- 2.Sb3#
- 2.Rc4#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qc5#
- 2.Qb6#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qc5#
- 2.Qb6#
- 1...exd6!
- 1...gxh4
- 1.Qc7?
- 1...gxh4
- 2.Qxf4#
- 1...d6
- 2.Sc6#
- 1...Bb1
- 2.Sb3#
- 2.Rb4#
- 1...Bb3
- 2.Sxb3#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qb6#
- 2.Qc5#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qb6#
- 2.Qc5#
- 1...Bc4!
- 1...gxh4
- 1.b3?
- threat
- 2.Rb4#
- 1...Bxb3
- 2.Sxb3#
- 1...d6
- 2.Sc6#
- 1...Sd3
- 2.Rxd3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Se3!
- threat
- 1.Sd8?
- Keys
- 1.Rbb3!
- 1...Bxb3
- 2.Sxb3#
- 1...gxh4
- 2.Qxf4#
- 1...d6
- 2.Sc6#
- 1...Bb1
- 2.Rb4#
- 1...Se2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Sh5
- 2.Rd3#
- 1...Sg6
- 2.Rd3#
- 1...Sf2
- 2.Bxf2#
- 1...Sh2
- 2.Bf2#
- 1...Se3
- 2.dxe3#
- 1...Se5
- 2.Bf2#
- 2.Qa7#
- 1...Sf6
- 2.Bf2#
- 1...Sh6
- 2.Bf2#
- 1...e5
- 2.Qa7#
- 1...Bxb3
- 1.Rbb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- P(g);SBLOCK::QAB(K)
- P(h);N_GUARD::S(G)
- Tries
- Try
- S(J);
- Vars
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- Refutation
- B(a);P_PINR(H)
- Try
- B(B);
- Vars
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- P(h);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- P(g);SBLOCK::QAB(K)
- Refutation
- B(a);P_PINR(H)
- Try
- B(B);
- Threat
- R(H)
- Vars
- B(a);XB(B)::S(G),XB(a)
- P(h);N_GUARD::S(G)
- S(d);OGATE::P(C),XS(d)
- Refutation
- S(c);
- Try
- B(F);
- Vars
- P(h);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- P(g);SBLOCK::QAB(K)
- Refutation
- B(a);P_PINR(H)
- Try
- B(F);CHECK
- Refutation
- S(d);XB(F)
- Try
- B(F);
- Vars
- P(h);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- P(g);SBLOCK::QAB(K)
- Refutation
- B(a);P_PINR(H)
- Try
- R(D);
- Threat
- QAB(K)
- Vars
- S(c);N_GUARD::R1(D),XS(c)
- Refutation
- S(d);XR(D)
- Try
- R(D);CHECK
- Vars
- P(e);XR(D)::QAB(K)
- Refutation
- B(a);P_PINR(H),XR(D)
- Try
- Q(K);CHECK
- Vars
- S(d);SBLOCK,XQ(K)::B(F)
- Refutation
- K(b);P_SPINP(e),S_FLIGHT,XQ(K)
- Try
- Q(K);P_PINP(e)
- Vars
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- B(a);N_GUARD,P_PINR(H)::R1(D),XB(a)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- Refutation
- P(i);N_SPINP(e),XQ(K)
- Try
- Q(K);
- Vars
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- P(h);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- Refutation
- B(a);P_PINR(H)
- Try
- P(A);
- Threat
- R(H)
- Vars
- B(a);XP(A)::S(G),XB(a)
- P(h);N_GUARD::S(G)
- S(c);N_GUARD::R1(D),XS(c)
- Refutation
- S(d);
- Try
- Actual
- R(H);
- Vars
- B(a);XR(H)::S(G),XB(a)
- P(f);N_GUARD,XB(F)::QAR2(K),XS(c)
- P(h);N_GUARD::S(G)
- B(a);N_GUARD::R(H)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- S(d);OGATE::P(C),XS(d)
- P(g);SBLOCK::QAB(K)
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).