MESON Chess Problem Database
Problem Display
PID: 250452 (8/8/1Kn5/1N6/2b5/2p1pRr1/nN1Pk1P1/1Q1R1rB1 w - - 0 1)
Chepizhni, Viktor Ivanovich
Uralski Problemist, 2009
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxd1
- 2.Qxd1#
- 1...Rxg2
- 2.Rxe3#
- 1...Rg4
- 2.Rxe3#
- 1...Rg5
- 2.Rxe3#
- 1...Rg6
- 2.Rxe3#
- 1...Rg7
- 2.Rxe3#
- 1...Rg8
- 2.Rxe3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bd5
- 2.Qd3#
- 1...Be6
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Sc1
- 2.Sxc3#
- 1...Sab4
- 2.Sxc3#
- 1...Scb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Se5
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Se7
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...exd2
- 2.Qe4#
- 1...Rxd1
- Tries
- 1.Re1+?
- 1...Kxd2
- 2.Sxc4#
- 2.Bxe3#
- 2.Qd1#
- 1...Rxe1!
- 1...Kxd2
- 1.Qe4?
- threat
- 2.Qxe3#
- 2.Qxc4#
- 1...Rxd1
- 2.Qxe3#
- 1...Rfxf3
- 2.Qxc4#
- 1...Rxg2
- 2.Rxe3#
- 2.Qxe3#
- 1...Rgxf3
- 2.Qxc4#
- 1...Bxb5
- 2.Qxe3#
- 1...Rg4
- 2.Rxe3#
- 2.Qxe3#
- 1...Bb3
- 2.Qd3#
- 2.Qxe3#
- 1...Bd3
- 2.Qxd3#
- 2.Qxe3#
- 1...Bd5
- 2.Qd3#
- 2.Qxe3#
- 1...Be6
- 2.Qd3#
- 2.Qxe3#
- 1...Bf7
- 2.Qd3#
- 2.Qxe3#
- 1...Bg8
- 2.Qd3#
- 2.Qxe3#
- 1...Sc1
- 2.Sxc3#
- 2.Qxe3#
- 1...Sab4
- 2.Sxc3#
- 2.Qxe3#
- 1...Scb4
- 2.Sd4#
- 2.Qxe3#
- 1...Sd4
- 2.Sxd4#
- 2.Qxe3#
- 1...Sa5
- 2.Sd4#
- 2.Qxe3#
- 1...Se5
- 2.Sd4#
- 2.Qxe3#
- 1...cxb2!
- threat
- 1.dxc3?
- threat
- 2.Qc2#
- 1...Rxd1
- 2.Qxd1#
- 1...Rxg2
- 2.Rxe3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Scb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sab4!
- threat
- 1.dxe3?
- threat
- 2.Qc2#
- 1...Rxd1
- 2.Qxd1#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sab4
- 2.Sxc3#
- 1...Scb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...c2
- 2.Qxc2#
- 1...Rxg2!
- threat
- 1.d3?
- threat
- 2.Qc2#
- 1...Rxd1
- 2.Qxd1#
- 1...Rxg2
- 2.Rxe3#
- 1...Bxd3
- 2.Qxd3#
- 1...Sab4
- 2.Sxc3#
- 1...Scb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...c2
- 2.Qxc2#
- 1...Bb3!
- threat
- 1.d4?
- threat
- 2.Qc2#
- 1...Rxd1
- 2.Qxd1#
- 1...Rxg2
- 2.Rxe3#
- 1...Sxd4
- 2.Sxd4#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sab4
- 2.Sxc3#
- 1...c2
- 2.Qxc2#
- 1...Scb4!
- threat
- 1.Re1+?
- Keys
- 1.Qc2!
- threat
- 2.dxc3#
- 2.dxe3#
- 2.d3#
- 2.d4#
- 1...Rxd1
- 2.Qxd1#
- 1...Rxg2
- 2.Rxe3#
- 1...cxb2
- 2.dxe3#
- 2.d3#
- 2.d4#
- 1...cxd2
- 2.Qxc4#
- 1...exd2
- 2.Qe4#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sab4
- 2.Sxc3#
- 1...Scb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- threat
- 1.Qc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- R(f);N_GUARD,XP(F)::R1(G),XP(e)
- R(f);N_GUARD::R1(G),XP(e)
- B(g);N_GUARD::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- S(b);N_GUARD::S(H),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- P(e);OGATEB,XP(E)::QAR2(A)
- Tries
- Try
- R(B);CHECK
- Refutation
- R(a);XR(B)
- Try
- Q(A);P_PINP(e)
- Threat
- DUALS(2)
- Vars
- R(a);XR(B)::QAR1(A),XP(e)
- R(a);XR(G)::QAB(A),XB(g)
- R(f);XR(G)::QAB(A),XB(g)
- B(g);XS(H)::QAR1(A),XP(e)
- Refutation
- P(d);XS(D)
- Try
- P(E);XP(d)
- Threat
- QAR2(A)
- Vars
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- R(f);N_GUARD,XP(F)::R1(G),XP(e)
- B(g);N_GUARD::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- Refutation
- S(b);
- Try
- P(E);XP(e)
- Threat
- QAR2(A)
- Vars
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- B(g);N_GUARD::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- S(b);N_GUARD::S(H),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- P(d);::QAR2(A),XP(d)
- Refutation
- R(f);XP(F)
- Try
- P(E);
- Threat
- QAR2(A)
- Vars
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- R(f);N_GUARD,XP(F)::R1(G),XP(e)
- B(g);OGATE,XP(E)::QAB1(A),XB(g)
- S(b);N_GUARD::S(H),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- P(d);::QAR2(A),XP(d)
- Refutation
- B(g);
- Try
- P(E);
- Threat
- QAR2(A)
- Vars
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- R(f);N_GUARD,XP(F)::R1(G),XP(e)
- S(h);XP(E)::S(H),XS(h)
- B(g);N_GUARD::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- S(b);N_GUARD::S(H),XP(d)
- P(d);::QAR2(A),XP(d)
- Refutation
- S(h);
- Try
- Actual
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(a);OGATE,XR(B)::QAB1(A),XR(a)
- R(f);N_GUARD,XP(F)::R1(G),XP(e)
- P(d);OGATE,P_SPINP(d),XP(E)::QAB(A),XB(g)
- P(e);OGATEB,P_SPINP(e),XP(E)::QAR2(A)
- B(g);N_GUARD::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- S(b);N_GUARD::S(H),XP(d)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(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).