MESON Chess Problem Database
Problem Display
PID: 202330 (5B2/3N1p2/1K2kN2/1pR3p1/4r3/2Q2R2/8/6b1 w - - 0 1)
Mari, Alberto
L'Alfiere di Re, 1923
#2
7 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qb3#
- 1...Re2
- 2.Qb3#
- 1...Re3
- 2.Rc6#
- 1...Ra4
- 2.Qe5#
- 1...Rb4
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Rd4
- 2.Re5#
- 1...Rf4
- 2.Qe5#
- 1...Rg4
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Bd4
- 2.Qb3#
- 1...Bxc5+
- 2.Sxc5#
- 1...Re1
- Tries
- 1.Kb7?
- threat
- 2.Rc6#
- 1...Bxc5
- 2.Sxc5#
- 1...Rc4
- 2.Re5#
- 2.Qe5#
- 1...Rd4
- 2.Re5#
- 1...Rf4
- 2.Re5#
- 2.Qe5#
- 1...Bh2!
- threat
- 1.Kc7?
- threat
- 2.Rc6#
- 1...Bxc5
- 2.Sxc5#
- 1...Rc4
- 2.Qe5#
- 1...Rd4
- 2.Re5#
- 1...Rf4
- 2.Re5#
- 2.Qe5#
- 1...Bh2+!
- threat
- 1.Qd2?
- threat
- 2.Qd5#
- 2.Qd6#
- 1...Bh2
- 2.Qd5#
- 1...Rd4
- 2.Re5#
- 1...Re5
- 2.Qd6#
- 1...Bd4
- 2.Qa2#
- 1...Bxc5+!
- threat
- 1.Qd4?
- threat
- 2.Rc6#
- 2.Qxe4#
- 2.Qd5#
- 2.Qd6#
- 1...Rxd4
- 2.Re5#
- 1...Bh2
- 2.Qd5#
- 1...Re1
- 2.Rc6#
- 2.Qg4#
- 2.Qd5#
- 2.Qd6#
- 1...Re2
- 2.Rc6#
- 2.Qg4#
- 2.Qd5#
- 2.Qd6#
- 1...Re3
- 2.Rc6#
- 2.Qg4#
- 2.Qd5#
- 2.Qd6#
- 1...Rf4
- 2.Re5#
- 2.Qe5#
- 2.Qd5#
- 2.Qd6#
- 1...Rg4
- 2.Re5#
- 2.Rc6#
- 2.Qe5#
- 2.Qxg4#
- 2.Qd5#
- 2.Qd6#
- 1...Rh4
- 2.Re5#
- 2.Rc6#
- 2.Qe5#
- 2.Qd5#
- 2.Qd6#
- 1...Re5
- 2.Rxe5#
- 2.Rc6#
- 2.Qxe5#
- 2.Qd6#
- 1...Bxd4!
- threat
- 1.Qd3?
- threat
- 2.Qxe4#
- 2.Qd5#
- 2.Qd6#
- 1...Bh2
- 2.Qd5#
- 1...Re1
- 2.Qf5#
- 2.Qb3#
- 2.Qd5#
- 2.Qd6#
- 1...Re2
- 2.Qf5#
- 2.Qb3#
- 2.Qd5#
- 2.Qd6#
- 1...Re3
- 2.Rc6#
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Ra4
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Rb4
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Rc4
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Rd4
- 2.Re5#
- 2.Qf5#
- 1...Rf4
- 2.Qd5#
- 2.Qd6#
- 1...Rg4
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Rh4
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Re5
- 2.Qd6#
- 1...Bd4
- 2.Qb3#
- 1...Bxc5+!
- threat
- 1.Kb7?
- Keys
- 1.Rf4!
- threat
- 2.Rxe4#
- 1...Bxc5+
- 2.Sxc5#
- 1...Rxf4
- 2.Qe5#
- 1...gxf4
- 2.Qh3#
- 1...Bh2
- 2.Rc6#
- 1...Re1
- 2.Qb3#
- 1...Re2
- 2.Qb3#
- 1...Re3
- 2.Rc6#
- 1...Ra4
- 2.Qe5#
- 1...Rb4
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Rd4
- 2.Re5#
- 1...Re5
- 2.Qxe5#
- 1...Bd4
- 2.Qb3#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD::QAB(A)
- R(b);N_PINR(C)::R(C)
- R(b);N_GUARD::QAR1(A)
- R(b);N_PINR(C)::R1(C)
- R(b);N_GUARD::QAR1(A),XR(b)
- B(a);S_CUTR(b)::QAB(A)
- B(a);CHECK,XR(C)::S(F),XB(a)
- Tries
- Try
- K(D);N_SPINR(C),P-FLIGHT
- Threat
- R(C)
- Vars
- B(a);XR(C)::S(F),XB(a)
- R(b);N_GUARD::R1(C)
- Refutation
- B(a);
- Try
- K(D);N_SPINR(C),S_FLIGHT
- Threat
- R(C)
- Vars
- B(a);XR(C)::S(F),XB(a)
- R(b);N_GUARD,P_PINR(C)::QAR1(A)
- R(b);N_GUARD::R1(C)
- Refutation
- B(a);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(a);N_PINR(C)::QAB1(A)
- R(b);N_PINR(C)::R1(C)
- R(b);::QAR1(A)
- B(a);S_CUTR(b)::QAB(A)
- Refutation
- B(a);CHECK,XR(C)
- Try
- Q(A);N_SPINR(C)
- Threat
- DUALS(4)
- Vars
- R(b);N_GUARD,XQ(A)::R1(C)
- B(a);::QAB1(A)
- Refutation
- B(a);P_PINR(C),XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(a);N_PINR(C)::QAB1(A)
- R(b);::QAR1(A)
- B(a);S_CUTR(b)::QAB(A)
- Refutation
- B(a);CHECK,XR(C)
- Try
- Actual
- R(B);
- Threat
- R(B),XR(b)
- Vars
- B(a);CHECK,XR(C)::S(F),XB(a)
- R(b);N_GUARD,XR(B)::QAR1(A)
- P(d);N_GUARD,XR(B)::QAB(A)
- B(a);N_PINR(C)::R(C)
- R(b);N_GUARD::QAB(A)
- R(b);N_PINR(C)::R(C)
- R(b);N_GUARD::QAR1(A)
- R(b);N_PINR(C)::R1(C)
- R(b);N_GUARD::QAR1(A),XR(b)
- B(a);S_CUTR(b)::QAB(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).