MESON Chess Problem Database
Problem Display
PID: 198345 (2b2bN1/1pRp4/1K1PB1k1/8/7Q/8/8/8 w - - 0 1)
ten Cate, Pieter
Rostra Gymnasiorum, 1920
#2
6 + 5
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Se7#
- 1...dxe6
- 2.Qg4#
- 1...Kg7
- Tries
- 1.Kb5?
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...dxe6
- 2.Qg4#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Se7#
- 1...b6!
- 1...Kg7
- 1.Rc1?
- threat
- 2.Rg1#
- 1...Kg7
- 2.Rg1#
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...dxe6!
- threat
- 1.Rc2?
- threat
- 2.Rg2#
- 1...Kg7
- 2.Rg2#
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...dxe6!
- threat
- 1.Rc3?
- threat
- 2.Rg3#
- 1...Kg7
- 2.Rg3#
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...dxe6!
- threat
- 1.Rc4?
- threat
- 2.Rg4#
- 1...Kg7
- 2.Rg4#
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...dxe6!
- threat
- 1.Rc5?
- threat
- 2.Rg5#
- 1...Kg7
- 2.Rg5#
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...dxe6!
- threat
- 1.Rxb7?
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...dxe6
- 2.Qg4#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Se7#
- 1...Bxb7!
- 1...Kg7
- 1.Rxd7?
- threat
- 2.Qg4#
- 1...Be7
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Bg7
- 2.Se7#
- 1...Bxd7!
- threat
- 1.Rxc8?
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Se7#
- 1...dxe6!
- 1...Kg7
- 1.Qg3+?
- 1...Kh5
- 2.Bf7#
- 2.Rc5#
- 2.Qg4#
- 1...Kh7!
- 1...Kh5
- 1.Qf6+?
- 1...Kh5
- 2.Rc5#
- 1...Kh7!
- 1...Kh5
- 1.Qe4+?
- 1...Kg5
- 2.Rc5#
- 2.Qg4#
- 1...Kh5
- 2.Rc5#
- 2.Qg4#
- 1...Kg7!
- 1...Kg5
- 1.Qf4?
- 1...Kh5
- 2.Bf7#
- 2.Qg4#
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...dxe6
- 2.Qg4#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Qf5#
- 1...Kh7!
- 1...Kh5
- 1.Qh5+?
- 1...Kg7
- 2.Qh6#
- 1...Kxh5!
- 1...Kg7
- 1.Kb5?
- Keys
- 1.Qh3!
- 1...Kg5
- 2.Qg4#
- 1...Kg7
- 2.Qh6#
- 1...Bxd6
- 2.Qh6#
- 1...dxe6
- 2.Qg4#
- 1...Bh6
- 2.Qxh6#
- 1...Be7
- 2.Qh6#
- 1...Bg7
- 2.Qf5#
- 1...Kg5
- 1.Qh3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);N_GUARD,SBLOCK::S(F)
- P(c);XB(D)::QAR2(A)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- P(c);XB(D)::QAR2(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);N_GUARD,SBLOCK::S(F)
- Refutation
- P(b);
- Try
- R(E);
- Threat
- R(E)
- Vars
- B(e);N_GUARD,XP(C)::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- Refutation
- P(c);XB(D)
- Try
- R(E);
- Threat
- R(E)
- Vars
- B(e);N_GUARD,XP(C)::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- Refutation
- P(c);XB(D)
- Try
- R(E);
- Threat
- R(E)
- Vars
- B(e);N_GUARD,XP(C)::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- Refutation
- P(c);XB(D)
- Try
- R(E);
- Threat
- R(E)
- Vars
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- Refutation
- P(c);XB(D)
- Try
- R(E);
- Threat
- R1(E)
- Vars
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- Refutation
- P(c);XB(D)
- Try
- R(E);XP(b)
- Vars
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- P(c);XB(D)::QAR2(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);N_GUARD,SBLOCK::S(F)
- Refutation
- B(d);XR(E)
- Try
- R(E);XP(c)
- Threat
- QAR2(A)
- Vars
- B(e);N_GUARD::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD,SBLOCK::S(F)
- Refutation
- B(d);XR(E)
- Try
- R(E);XB(d)
- Vars
- K(a);P-FLIGHT::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);N_GUARD,SBLOCK::S(F)
- Refutation
- P(c);XB(D)
- Try
- Q(A);CHECK
- Refutation
- K(a);P_SPINP(c),S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- K(a);S_FLIGHT::R(E)
- Refutation
- K(a);P_SPINP(c),S_FLIGHT
- Try
- Q(A);CHECK
- Refutation
- K(a);P-FLIGHT,P_SPINP(c)
- Try
- Q(A);
- Vars
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- P(c);XB(D)::QAR2(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);SBLOCK::QAB1(A)
- Refutation
- K(a);P_SPINP(c),S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- Refutation
- K(a);S_FLIGHT,XQ(A)
- Try
- Actual
- Q(A);
- Vars
- K(a);P-FLIGHT::QAR1(A)
- K(a);P-FLIGHT,P_SPINP(c)::QAB1(A)
- B(e);N_GUARD,XP(C)::QAR1(A)
- P(c);XB(D)::QAR2(A)
- B(e);N_GUARD::QAR1(A),XB(e)
- B(e);N_GUARD::QAR1(A)
- B(e);SBLOCK::QAB1(A)
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).