MESON Chess Problem Database
Problem Display
PID: 194038 (3b3Q/3P4/4pp2/1P1kBn2/NR1p1Pp1/3p1q2/3P4/4R1KB w - - 0 1)
Gevers, Raymond
L'Eco degli Scacchi, 1917
#2
11 + 9
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Qe4
- 2.Bxe4#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...fxe5
- 2.Qxe5#
- 1...Qxh1+
- Tries
- 1.Bg2?
- 1...fxe5
- 2.Qxe5#
- 1...Se3
- 2.Rxd4#
- 1...Qe4
- 2.Bxe4#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qxg2+!
- 1...fxe5
- 1.Ra1?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Ke4
- 2.Sc3#
- 1...fxe5
- 2.Qxe5#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qe4!
- 1...Qxh1+
- 1.Reb1?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Ke4
- 2.Sc3#
- 1...fxe5
- 2.Qxe5#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qe4!
- 1...Qxh1+
- 1.Rd1?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Ke4
- 2.Sc3#
- 1...fxe5
- 2.Qxe5#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qe4!
- 1...Qxh1+
- 1.Rf1?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Ke4
- 2.Sc3#
- 1...fxe5
- 2.Qxe5#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qe4!
- 1...Qxh1+
- 1.Re2?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...fxe5
- 2.Qxe5#
- 1...Se3
- 2.Rxd4#
- 1...Qe4
- 2.Bxe4#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...dxe2!
- 1...Qxh1+
- 1.Re3?
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Sxe3
- 2.Rxd4#
- 1...fxe5
- 2.Qxe5#
- 1...Qe4
- 2.Bxe4#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...dxe3!
- 1...Qxh1+
- 1.Qf8?
- threat
- 2.Qc5#
- 1...Qg2+
- 2.Bxg2#
- 1...Se3
- 2.Rxd4#
- 1...Bb6
- 2.Sxb6#
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sd6
- 2.Rxd4#
- 2.Qxd6#
- 1...Se7
- 2.Rxd4#
- 1...Qxh1+!
- threat
- 1.Bg2?
- Keys
- 1.Rc1!
- 1...Qxh1+
- 2.Qxh1#
- 1...Qg2+
- 2.Bxg2#
- 1...Ke4
- 2.Sc3#
- 1...fxe5
- 2.Qxe5#
- 1...Qe4
- 2.Rc5#
- 1...Ba5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Se3
- 2.Rxd4#
- 1...Sg3
- 2.Rxd4#
- 1...Sh4
- 2.Rxd4#
- 1...Sd6
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...g3
- 2.Bxf3#
- 1...Qxh1+
- 1.Rc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- Q(b);OGATE::B(C),XQ(b)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- Tries
- Try
- B(C);
- Vars
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- S(f);N_GUARD::R1(F),XP(c)
- Q(b);OGATE::B(C),XQ(b)
- B(i);OGATE::QAB(K)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XB(C)
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(e);P_SPINP(c),S_FLIGHT::S(E)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- Q(b);
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(e);P_SPINP(c),S_FLIGHT::S(E)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- Q(b);
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(e);P_SPINP(c),S_FLIGHT::S(E)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- Q(b);
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(e);P_SPINP(c),S_FLIGHT::S(E)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- Q(b);
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- S(f);N_GUARD::R1(F),XP(c)
- Q(b);OGATE::B(C),XQ(b)
- B(i);OGATE::QAB(K)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- S(f);N_GUARD,XR(A)::R1(F),XP(c)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- Q(b);OGATE::B(C),XQ(b)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
- Refutation
- P(c);XR(A)
- Try
- Q(K);
- Threat
- QAR1(K)
- Vars
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- S(f);N_GUARD::R1(F),XP(c)
- B(i);OGATE::QAB(K)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XB(C)
- Try
- Actual
- R(A);
- Vars
- Q(b);CHECK,N_SPINQ(b),OGATE,XB(C)::QAB(K),XQ(b)
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(e);P_SPINP(c),S_FLIGHT::S(E)
- P(h);OGATE,XB(I)::QAR1(K),XP(h)
- Q(b);::R1(A)
- B(i);OGATE::QAB(K)
- S(f);N_GUARD::R1(F),XP(c)
- P(d);N_GUARD::B(C),XQ(b)
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).