MESON Chess Problem Database
Problem Display
PID: 194892 (8/3p2Q1/K2n3B/2Rpq3/3kN3/N1R2P2/pnB2b2/rb6 w - - 0 1)
Gevers, Raymond
L'Italia Scacchistica, 1918
#2
9 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qf6
- 2.Qxf6#
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sxe4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- Tries
- 1.Ka7?
- 1...Sb5+
- 2.Sxb5#
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sc8+!
- 1...Sb5+
- 1.Sxd6?
- threat
- 2.Sab5#
- 2.Sdb5#
- 2.Sf5#
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 2.Sab5#
- 2.Sdb5#
- 1...Qf6
- 2.Qxf6#
- 1...Sc4!
- threat
- 1.Bc1?
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Qxg7!
- 1...Bxc2
- 1.Bd2?
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Qxg7!
- 1...Bxc2
- 1.Bf4?
- threat
- 2.Bxe5#
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Bg3
- 2.Be3#
- 2.Qxe5#
- 1...Sd3
- 2.Rxd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Qxg7!
- threat
- 1.Rb3?
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sxe4!
- 1...Qxg7
- 1.R3c4+?
- 1...Sdxc4
- 2.Sb5#
- 1...dxc4
- 2.Qxe5#
- 1...Sbxc4!
- 1...Sdxc4
- 1.R5c4+?
- 1...Sbxc4
- 2.Rd3#
- 1...Sdxc4
- 2.Sb5#
- 1...dxc4!
- 1...Sbxc4
- 1.Rc7?
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...dxe4!
- 1...Qxg7
- 1.Rc8?
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...Sxc8
- 2.Sb5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...dxe4!
- 1...Qxg7
- 1.Ka7?
- Keys
- 1.Ra5!
- 1...Qxg7
- 2.Bxg7#
- 1...Bxc2
- 2.Sxc2#
- 1...Sxe4
- 2.Sb5#
- 1...dxe4
- 2.Qxe5#
- 1...Qf6
- 2.Qxf6#
- 1...Be1
- 2.Be3#
- 1...Bg1
- 2.Qxg1#
- 1...Be3
- 2.Bxe3#
- 1...Bg3
- 2.Be3#
- 1...Bh4
- 2.Be3#
- 1...Sd1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 1...Sbc4
- 2.Rd3#
- 1...Sdc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Qxg7
- 1.Ra5!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(h);OGATEB::QAB(I),XQ(h)
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD,XS(E)::S(B)
- S(i);N_GUARD::S(B),XS(i)
- P(g);XS(E)::QAB1(I),XQ(h)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(i);CHECK,N_GUARD::S(B),XS(i)
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- P(g);XS(E)::QAB1(I),XQ(h)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- Refutation
- S(i);CHECK
- Try
- S(E);XS(i)
- Threat
- DUALS(3)
- Vars
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- Q(h);OGATEB,P_PINS(E)::QAB(I),XQ(h)
- Refutation
- S(d);
- Try
- B(H);
- Vars
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- P(g);XS(E)::QAB1(I),XQ(h)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(i)
- Refutation
- Q(h);N_SPINQ(h),XQ(I)
- Try
- B(H);
- Vars
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- P(g);XS(E)::QAB1(I),XQ(h)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(i)
- Refutation
- Q(h);N_SPINQ(h),XQ(I)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(h);OGATEB::QAB(I),XQ(h)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(C)
- S(i);N_GUARD::S(B)
- Refutation
- Q(h);N_SPINQ(h),XQ(I)
- Try
- R(C);
- Vars
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- P(g);XS(E)::QAB1(I),XQ(h)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(i)
- Refutation
- S(i);XS(E)
- Try
- R(C);CHECK
- Vars
- S(i);XR(C)::S(B)
- P(g);XR(C)::QAB1(I),XQ(h)
- Refutation
- S(d);XR(C)
- Try
- R(F);CHECK
- Vars
- S(d);XR(F)::R1(C)
- S(i);XR(F)::S(B)
- Refutation
- P(g);XR(F)
- Try
- R(F);
- Vars
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(i)
- Refutation
- P(g);XS(E)
- Try
- R(F);
- Vars
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- S(i);N_GUARD,XR(F)::S(B)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(i)
- Refutation
- P(g);XS(E)
- Try
- Actual
- R(F);
- Vars
- Q(h);N_SPINQ(h),OGATE,XQ(I)::B(H),XQ(h)
- B(b);XB(A)::S(B),XB(b)
- S(i);N_GUARD,XS(E)::S(B)
- P(g);XS(E)::QAB1(I),XQ(h)
- Q(h);OGATEB::QAB(I),XQ(h)
- B(e);N_GUARD::B(H)
- B(e);OGATEB::QAB(I),XB(e)
- B(e);N_GUARD::B(H),XB(e)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- S(i);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XS(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).