MESON Chess Problem Database
Problem Display
PID: 250051 (1Kb2b2/1pQp4/p2n3N/r7/4kqRr/1NB4p/5PP1/3R1B2 w - - 0 1)
Cristoffanini, Guido
La Strategie, 1927
#2
10 + 11
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sc5#
- 1...Ra2
- 2.Sc5#
- 1...Ra3
- 2.Sc5#
- 1...Ra4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 1...Rd5
- 2.Re1#
- 1...Re5
- 2.Rd4#
- 1...Sc4
- 2.Rd4#
- 2.Qxf4#
- 1...Sb5
- 2.Qxf4#
- 2.Qe5#
- 1...Sf5
- 2.Qxf4#
- 1...Sf7
- 2.Rd4#
- 2.Qxf4#
- 1...Se8
- 2.Rd4#
- 2.Qxf4#
- 1...hxg2
- 2.Bxg2#
- 1...b5
- 2.Sc5#
- 1...Ra1
- Tries
- 1.Bb2?
- threat
- 2.Qc2#
- 1...hxg2
- 2.Bxg2#
- 1...Rc5
- 2.Sxc5#
- 1...Rd5
- 2.Re1#
- 1...Sc4
- 2.Rd4#
- 2.Qxf4#
- 1...Sb5
- 2.Qxf4#
- 2.Qe5#
- 1...Sf5
- 2.Qxf4#
- 1...Sf7
- 2.Rd4#
- 2.Qxf4#
- 1...Se8
- 2.Rd4#
- 2.Qxf4#
- 1...Qxg4!
- threat
- 1.Bg7?
- threat
- 2.Rd4#
- 2.Qc2#
- 1...Qxg4
- 2.Rd4#
- 1...Rxh6
- 2.Qc2#
- 1...hxg2
- 2.Bxg2#
- 1...Ra2
- 2.Sc5#
- 2.Rd4#
- 1...Ra4
- 2.Sc5#
- 2.Qc2#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 1...Rd5
- 2.Re1#
- 1...Sc4
- 2.Rd4#
- 2.Qxf4#
- 1...Sb5
- 2.Qxf4#
- 2.Qe5#
- 1...Sf5
- 2.Qxf4#
- 1...Sf7
- 2.Rd4#
- 2.Qxf4#
- 1...Se8
- 2.Rd4#
- 2.Qxf4#
- 1...Bxg7!
- threat
- 1.Bh8?
- threat
- 2.Rd4#
- 2.Qc2#
- 1...Qxg4
- 2.Rd4#
- 1...Rxh6
- 2.Qc2#
- 1...Bxh6
- 2.Qc2#
- 1...hxg2
- 2.Bxg2#
- 1...Ra2
- 2.Sc5#
- 2.Rd4#
- 1...Ra4
- 2.Sc5#
- 2.Qc2#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 1...Rd5
- 2.Re1#
- 1...Sc4
- 2.Rd4#
- 2.Qxf4#
- 1...Sb5
- 2.Qxf4#
- 2.Qe5#
- 1...Sf5
- 2.Qxf4#
- 1...Sf7
- 2.Rd4#
- 2.Qxf4#
- 1...Se8
- 2.Rd4#
- 2.Qxf4#
- 1...Bg7!
- threat
- 1.Qxd6?
- threat
- 2.Sd2#
- 2.Bd3#
- 2.Re1#
- 2.Rd4#
- 2.Qxf4#
- 1...Qxg4
- 2.Sd2#
- 2.Bd3#
- 2.Rd4#
- 2.Qd4#
- 1...Rxg4
- 2.Bd3#
- 2.Rd4#
- 1...Rxh6
- 2.Bd3#
- 2.Rxf4#
- 2.Qxf4#
- 1...Bxh6
- 2.Bd3#
- 1...hxg2
- 2.Sd2#
- 2.Bxg2#
- 2.Qxf4#
- 1...Ra1
- 2.Sd2#
- 2.Sc5#
- 2.Bd3#
- 2.Rd4#
- 2.Qxf4#
- 2.Qe5#
- 1...Ra2
- 2.Sc5#
- 2.Bd3#
- 2.Rd4#
- 2.Qxf4#
- 2.Qe5#
- 1...Ra4
- 2.Sd2#
- 2.Sc5#
- 2.Bd3#
- 2.Re1#
- 2.Qxf4#
- 2.Qe5#
- 1...Rd5
- 2.Re1#
- 2.Qxf4#
- 1...Re5
- 2.Sd2#
- 2.Bd3#
- 2.Re1#
- 2.Rd4#
- 2.Qxe5#
- 2.Qd3#
- 2.Qd4#
- 1...Rf5
- 2.Sd2#
- 2.Bd3#
- 2.Re1#
- 2.Rd4#
- 1...Bg7
- 2.Sd2#
- 2.Bd3#
- 2.Re1#
- 2.Qxf4#
- 1...Bxd6+!
- threat
- 1.Bb2?
- Keys
- 1.Bf6!
- threat
- 2.Rd4#
- 2.Qc2#
- 1...Qxg4
- 2.Rd4#
- 1...Rxh6
- 2.Qc2#
- 1...Bxh6
- 2.Qc2#
- 1...hxg2
- 2.Bxg2#
- 1...Ra2
- 2.Sc5#
- 2.Rd4#
- 1...Ra4
- 2.Sc5#
- 2.Qc2#
- 1...Rc5
- 2.Sxc5#
- 2.Rd4#
- 1...Rd5
- 2.Re1#
- 1...Sc4
- 2.Rd4#
- 2.Qxf4#
- 1...Sb5
- 2.Qxf4#
- 2.Qe5#
- 1...Sf5
- 2.Qxf4#
- 1...Sf7
- 2.Rd4#
- 2.Qxf4#
- 1...Se8
- 2.Rd4#
- 2.Qxf4#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- R(e);N_GUARD::S(E)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::R(A)
- R(e);SBLOCK::R1(A)
- S(g);OGATE,P_PINQ(I)::QAR1(I),XQ(c)
- P(a);OGATE,XP(D)::B(B),XP(a)
- P(h);S_CUTR(e)::S(E)
- Tries
- Try
- B(F);
- Threat
- QAB(I)
- Vars
- P(a);OGATE,XP(D)::B(B),XP(a)
- R(e);N_GUARD::S(E),XR(e)
- R(e);SBLOCK::R(A)
- S(g);OGATE,P_PINQ(I)::QAR1(I),XQ(c)
- Refutation
- Q(c);N_SPINQ(c),XR(G)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XR(G)::R1(A)
- R(d);XS(H)::QAB(I)
- P(a);OGATE,XP(D)::B(B),XP(a)
- R(e);SBLOCK::R(A)
- S(g);OGATE,P_PINQ(I)::QAR1(I),XQ(c)
- Refutation
- B(k);XB(F)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XR(G)::R1(A)
- R(d);XS(H)::QAB(I)
- B(k);XS(H)::QAB(I)
- P(a);OGATE,XP(D)::B(B),XP(a)
- R(e);SBLOCK::R(A)
- S(g);OGATE,P_PINQ(I)::QAR1(I),XQ(c)
- Refutation
- B(k);
- Try
- Q(I);P_SPINQ(I),XS(g)
- Threat
- DUALS(5)
- Vars
- B(k);XS(H)::B(B)
- Refutation
- B(k);CHECK,XQ(I)
- Try
- Actual
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XR(G)::R1(A)
- R(d);XS(H)::QAB(I)
- B(k);XS(H)::QAB(I)
- P(a);OGATE,XP(D)::B(B),XP(a)
- R(e);SBLOCK::R(A)
- S(g);OGATE,P_PINQ(I)::QAR1(I),XQ(c)
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).