MESON Chess Problem Database
Problem Display
PID: 270978 (1r6/bb5q/6r1/R6n/QN3kP1/3B2n1/3P1NPP/1KB2R2 w - - 0 1)
Mari, Alberto
Schackvarlden, 1934
#2
12 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Sh3#
- 1...Be3
- 2.dxe3#
- 1...Sxf1
- 2.Rf5#
- 1...Sh1
- 2.Rf5#
- 1...Se2
- 2.Rf5#
- 1...Se4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Rxg4
- Tries
- 1.Sc6+?
- 1...Se4
- 2.Rf5#
- 2.Qxe4#
- 1...Bd4!
- 1...Se4
- 1.Bc2?
- threat
- 2.Sbd3#
- 2.d4#
- 1...Bxf2
- 2.Sd3#
- 1...Sxf1
- 2.Sbd3#
- 2.Rf5#
- 1...Bc5
- 2.d4#
- 1...Bd5
- 2.d4#
- 1...Sf5
- 2.Rxf5#
- 1...Bd4
- 2.Sbd3#
- 1...Qe7
- 2.Sbd3#
- 1...Rb6
- 2.d3#
- 2.d4#
- 1...Re6
- 2.Sbd3#
- 1...Re8
- 2.Sbd3#
- 1...Be3
- 2.Sbd3#
- 2.dxe3#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Ba6
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Bc8
- 2.d4#
- 1...Se2
- 2.Sbd3#
- 2.Rf5#
- 1...Se4
- 2.Sbd3#
- 2.Rf5#
- 1...Bxg2!
- threat
- 1.Sc6+?
- Keys
- 1.Be2!
- threat
- 2.Sbd3#
- 2.d4#
- 1...Rxg4+
- 2.Sbd3#
- 1...Rg5+
- 2.Sbd3#
- 1...Ra6+
- 2.Sbd3#
- 1...Rb6+
- 2.d3#
- 1...Rc6+
- 2.Sbd3#
- 1...Rd6+
- 2.Sbd3#
- 1...Re6+
- 2.Sbd3#
- 1...Rf6+
- 2.Sbd3#
- 1...Rh6+
- 2.Sbd3#
- 1...Rg7+
- 2.Sbd3#
- 1...Rgg8+
- 2.Sbd3#
- 1...Be4+
- 2.Sd3#
- 1...Bxf2
- 2.Sd3#
- 2.d3#
- 1...Bxg2
- 2.d4#
- 1...Sxf1
- 2.Sbd3#
- 2.Rf5#
- 1...Sxe2
- 2.Sbd3#
- 2.Rf5#
- 1...Bc5
- 2.d4#
- 1...Bd5
- 2.d4#
- 1...Sf5
- 2.Rxf5#
- 1...Bd4
- 2.Sbd3#
- 1...Qc7
- 2.Sbd3#
- 1...Qe7
- 2.Sbd3#
- 1...Rc8
- 2.Sbd3#
- 1...Re8
- 2.Sbd3#
- 1...Be3
- 2.Sbd3#
- 2.dxe3#
- 1...Bf3
- 2.d4#
- 1...Ba6
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Bc8
- 2.d4#
- 1...Se4
- 2.Sfd3#
- 2.Sh3#
- 2.Sbd3#
- 2.Rf5#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 24
- REMOVED MATES = 5
- Sets
- R(d);P_PINB(H),SBLOCK,XP(K)::R(C)+S(E),DCHECK
- B(e);OGATE::P(D),XB(e)
- S(a);N_GUARD,XR(C)::R1(L)
- S(a);N_GUARD::R1(L)
- S(a);N_GUARD::R1(L),XS(a)
- Tries
- Try
- S(J);CHECK
- Refutation
- B(e);P_SPINB(e)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(e);P_SPINB(e),XS(E)::QAR(I)+S(J),DCHECK
- B(e);::B(B)+P(D)
- B(f);P_PINS(J)::B(B)+P(D)
- S(a);N_GUARD::R1(L),XS(a)
- B(e);::S(J)
- Q(g);::QAR(I)+S(J),DCHECK
- R(d);P_PINB(H)::QAR(I)+S(J),DCHECK
- R(h);::QAR(I)+S(J),DCHECK
- B(f);P_PINB(H),P_PINS(J)::B(B)+P(D)
- Refutation
- B(f);P_PINS(J),XP(F)
- Try
- Actual
- B(H);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,XP(K)::QAR(I)+S(J),DCHECK
- R(d);CHECK::QAR(I)+S(J),DCHECK
- R(d);CHECK,P_PINS(J),S_CUTB(e)::B(B)+P(D)
- B(f);CHECK,P_PINS(J),SBLOCK::R(C)+S(E),DCHECK
- B(f);P_PINS(J),XP(F)::B(B)+P(D)
- B(e);::B(B)+P(D)
- B(f);P_PINS(J)::B(B)+P(D)
- S(a);N_GUARD::R1(L),XS(a)
- B(e);::S(J)
- Q(g);::QAR(I)+S(J),DCHECK
- R(h);::QAR(I)+S(J),DCHECK
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).