MESON Chess Problem Database
Problem Display
PID: 204301 (8/2p1NKN1/p2kP3/r6R/qP3P2/3B3p/7B/6R1 w - - 0 1)
Cancelliere, Giuseppe
L'Alfiere di Re, 1925
#2
10 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Se8#
- 1...Qc2
- 2.Se8#
- 1...Qb3
- 2.Se8#
- 1...Qc6
- 2.Sc8#
- 1...Qe8+
- 2.Sxe8#
- 1...Qa1
- 2.Se8#
- 1...Qa2
- 2.Se8#
- 1...Qa3
- 2.Se8#
- 1...Qxb4
- 2.Se8#
- 1...Rb5
- 2.Se8#
- 1...Rc5
- 2.bxc5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5
- 2.fxe5#
- 1...Rf5+
- 2.Sgxf5#
- 1...Rg5
- 2.fxg5#
- 1...Rxh5
- 2.f5#
- 1...c5
- 2.f5#
- 1...c6
- 2.Se8#
- 1...Qd1
- Tries
- 1.Be4?
- threat
- 2.Sc8#
- 1...Qe8+
- 2.Sxe8#
- 1...Rf5+
- 2.Sexf5#
- 2.Sgxf5#
- 1...c5
- 2.f5#
- 1...c6
- 2.Se8#
- 1...Rd5
- 2.Rxd5#
- 1...Qd7!
- threat
- 1.Bb5?
- threat
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 2.f5#
- 1...Qxb4
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Rxb5
- 2.Se8#
- 1...axb5
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 2.f5#
- 1...c5
- 2.Se8#
- 2.f5#
- 1...c6
- 2.Se8#
- 2.f5#
- 1...Qd1
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rxd1#
- 2.f5#
- 1...Qc2
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qb3
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 1...Qa1
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 1...Qa2
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 1...Qa3
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 1...Qxb5!
- threat
- 1.Rc1?
- threat
- 2.Sc8#
- 1...Qe8+
- 2.Sxe8#
- 1...Rf5+
- 2.Sgxf5#
- 1...Rxh5
- 2.f5#
- 1...c5
- 2.f5#
- 1...c6
- 2.Se8#
- 1...Qc2
- 2.Se8#
- 1...Rc5
- 2.bxc5#
- 1...Re5
- 2.fxe5#
- 1...Rg5
- 2.fxg5#
- 1...Qd7!
- threat
- 1.Rxa5?
- threat
- 2.Sgf5#
- 2.Rd5#
- 2.f5#
- 1...Qe8+
- 2.Sxe8#
- 1...Qxb4
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 1...Qxa5
- 2.Se8#
- 1...c5
- 2.f5#
- 1...c6
- 2.Se8#
- 2.f5#
- 1...Qc2
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 1...Qb3
- 2.Sgf5#
- 2.Se8#
- 2.f5#
- 1...Qc6
- 2.Sef5#
- 2.Sc8#
- 2.Sgf5#
- 2.f5#
- 1...Qa1
- 2.Sgf5#
- 2.Se8#
- 2.Rd5#
- 1...Qa2
- 2.Sgf5#
- 2.Se8#
- 1...Qb5!
- threat
- 1.Rb5?
- threat
- 2.Sgf5#
- 2.Se8#
- 2.f5#
- 1...Qxb4
- 2.Sgf5#
- 2.Se8#
- 1...Rxb5
- 2.Se8#
- 1...c5
- 2.Se8#
- 2.f5#
- 1...c6
- 2.Se8#
- 2.f5#
- 1...Qc2
- 2.Sgf5#
- 2.Se8#
- 1...Qa1
- 2.Sgf5#
- 2.Se8#
- 1...Qa2
- 2.Sgf5#
- 2.Se8#
- 1...Qxb5!
- threat
- 1.Rc5?
- threat
- 2.Sef5#
- 2.Sc8#
- 2.Sgf5#
- 2.f5#
- 1...Qe8+
- 2.Sxe8#
- 1...Qxb4
- 2.Rc6#
- 1...c6
- 2.Se8#
- 2.f5#
- 1...Qd7
- 2.Sf5#
- 2.f5#
- 1...Qc2
- 2.Sef5#
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 1...Qa1
- 2.Sef5#
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rc6#
- 1...Qa2
- 2.Sef5#
- 2.Sc8#
- 2.Sgf5#
- 2.Se8#
- 2.Rc6#
- 1...Rxc5!
- threat
- 1.Re5?
- threat
- 2.Sgf5#
- 1...Qe8+
- 2.Sxe8#
- 1...Rxe5
- 2.fxe5#
- 1...c6
- 2.Se8#
- 1...c5!
- threat
- 1.b5?
- threat
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qxf4+
- 2.Bxf4#
- 1...Rxb5
- 2.Se8#
- 1...axb5
- 2.Se8#
- 2.Rd5#
- 1...c5
- 2.Se8#
- 1...c6
- 2.Se8#
- 1...Qb3
- 2.Sc8#
- 2.Se8#
- 1...Qa2
- 2.Sc8#
- 2.Se8#
- 1...Qc4
- 2.Sc8#
- 2.Se8#
- 1...Qd4
- 2.Sc8#
- 2.Se8#
- 1...Qe4
- 2.Sc8#
- 2.Se8#
- 1...Qxb5!
- threat
- 1.Be4?
- Keys
- 1.Rd1!
- 1...Qe8+
- 2.Sxe8#
- 1...Rf5+
- 2.Sgxf5#
- 1...Qxd1
- 2.Se8#
- 1...Qxb4
- 2.Se8#
- 1...Rxh5
- 2.f5#
- 1...c5
- 2.f5#
- 1...c6
- 2.Se8#
- 1...Qd7
- 2.Bb5#
- 1...Qc2
- 2.Se8#
- 1...Qb3
- 2.Se8#
- 1...Qb5
- 2.Bxb5#
- 1...Qc6
- 2.Sc8#
- 1...Qa1
- 2.Se8#
- 1...Qa2
- 2.Se8#
- 1...Qa3
- 2.Se8#
- 1...Rb5
- 2.Se8#
- 1...Rc5
- 2.bxc5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5
- 2.fxe5#
- 1...Rg5
- 2.fxg5#
- 1...Qe8+
- 1.Rd1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD,P_PINP(G)::S(J)
- Q(b);SBLOCK::S(H)
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,XP(D)::S(J)
- R(c);S_CUTQ(b)::S(J)
- R(c);OGATE::P(D),XR(c)
- R(c);N_GUARD::R1(F),XR(c)
- R(c);OGATE::P(E),XR(c)
- R(c);CHECK,N_GUARD::S(J),XR(c)
- R(c);OGATE::B(B)+P(E),XR(c)
- R(c);N_GUARD,XR(F)::B(B)+P(E)
- P(f);S_CUTR(c)::B(B)+P(E)
- P(f);S_CUTQ(b)::S(J)
- Tries
- Try
- B(C);
- Threat
- S(H)
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- P(f);S_CUTR(c)::B(B)+P(E)
- P(f);S_CUTQ(b)::S(J)
- R(c);N_GUARD::R1(F),XR(c)
- Refutation
- Q(b);P_PINS(H)
- Try
- B(C);
- Threat
- DUALS(5)
- Vars
- R(c);XB(C)::S(J)
- Refutation
- Q(b);XB(C)
- Try
- R(A);
- Threat
- S(H)
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- R(c);CHECK,N_GUARD::S(J),XR(c)
- R(c);N_GUARD,XR(F)::B(B)+P(E)
- P(f);S_CUTR(c)::B(B)+P(E)
- P(f);S_CUTQ(b)::S(J)
- Q(b);N_GUARD::S(J)
- R(c);OGATE::P(D),XR(c)
- R(c);OGATE::P(E),XR(c)
- R(c);OGATE::B(B)+P(E),XR(c)
- Refutation
- Q(b);P_PINS(H)
- Try
- R(F);XR(c)
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,XR(F)::S(J)
- P(f);::B(B)+P(E)
- Refutation
- Q(b);
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- R(c);XR(F)::S(J)
- Refutation
- Q(b);XR(F)
- Try
- R(F);
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- Q(b);N_GUARD,XP(D)::R1(F)
- Refutation
- R(c);XR(F)
- Try
- R(F);
- Threat
- S(J)
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- R(c);OGATE,XR(F)::P(E),XR(c)
- P(f);S_CUTQ(b)::S(J)
- Refutation
- P(f);
- Try
- P(D);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XP(E)::B(B),XQ(b)
- R(c);XP(D)::S(J)
- P(f);::S(J)
- Refutation
- Q(b);XP(D)
- Try
- Actual
- R(A);
- Vars
- Q(b);CHECK,N_GUARD::S(J),XQ(b)
- R(c);CHECK,N_GUARD::S(J),XR(c)
- Q(b);N_GUARD,XR(A)::S(J)
- Q(b);N_GUARD,XP(D)::S(J)
- R(c);N_GUARD,XR(F)::B(B)+P(E)
- P(f);S_CUTR(c)::B(B)+P(E)
- P(f);S_CUTQ(b)::S(J)
- Q(b);N_GUARD,P_PINS(H)::R(A)+B(C)
- Q(b);N_GUARD::S(J)
- Q(b);N_GUARD,P_PINP(G)::S(J)
- Q(b);N_GUARD::R(A)+B(C),XQ(b)
- Q(b);SBLOCK::S(H)
- R(c);S_CUTQ(b)::S(J)
- R(c);OGATE::P(D),XR(c)
- R(c);N_GUARD::R1(F),XR(c)
- R(c);OGATE::P(E),XR(c)
- R(c);OGATE::B(B)+P(E),XR(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).