MESON Chess Problem Database
Problem Display
PID: 139481 (Q7/1N2N3/3Ppp2/1p2kbbR/3p1R1P/7p/1n5B/7K w - - 0 1)
Ellerman, Arnoldo
Deutsche Schachzeitung, 1922
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Rg4#
- 1...Bc2
- 2.Rg4#
- 1...Bd3
- 2.Rg4#
- 1...Be4+
- 2.Rf3#
- 1...Bg4
- 2.Rxg4#
- 1...Bg6
- 2.Rg4#
- 1...Bh7
- 2.Rg4#
- 1...Bxh4
- 2.Rfxh4#
- 1...b4
- 2.Qa5#
- 1...Bb1
- Tries
- 1.Sd8?
- threat
- 2.Sf7#
- 2.Re4#
- 2.Rxf5#
- 1...Be4+
- 2.Rf3#
- 2.Rxe4#
- 1...Bxf4
- 2.Sf7#
- 1...Bb1
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rg4#
- 2.Rf5#
- 1...Bc2
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rg4#
- 2.Rf5#
- 1...Bd3
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rg4#
- 2.Rf5#
- 1...Bg4
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rxg4#
- 2.Rf5#
- 1...Bg6
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rg4#
- 2.Rf5#
- 1...Bh7
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Re4#
- 2.Rg4#
- 2.Rf5#
- 1...d3
- 2.Sf7#
- 2.Re4#
- 1...Kxd6!
- threat
- 1.Rf1+?
- 1...Bf4
- 2.Re1#
- 1...Ke4!
- 1...Bf4
- 1.Rf2+?
- 1...Bf4
- 2.Re2#
- 1...Ke4!
- 1...Bf4
- 1.Rf3+?
- 1...Ke4
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 1...Bf4!
- 1...Ke4
- 1.Rxd4+?
- 1...Bf4
- 2.Sc6#
- 1...Kxd4!
- 1...Bf4
- 1.Rxg5?
- threat
- 2.Rfg4#
- 1...fxg5
- 2.Qh8#
- 1...Sd3!
- threat
- 1.Qa7?
- threat
- 2.Qxd4#
- 2.Qc5#
- 1...Be4+
- 2.Rf3#
- 1...Sd3
- 2.Qxd4#
- 1...Sa4
- 2.Qxd4#
- 1...d3
- 2.Qd4#
- 2.Qc5#
- 1...Bxf4!
- threat
- 1.hxg5?
- threat
- 2.Rg4#
- 2.Rfh4#
- 1...Be4+
- 2.Rf3#
- 1...fxg5
- 2.Qh8#
- 1...Bg4
- 2.Rxg4#
- 1...Sd3!
- threat
- 1.Sd8?
- Keys
- 1.Qa1!
- 1...Be4+
- 2.Rf3#
- 1...Bxf4
- 2.Qe1#
- 1...Bxh4
- 2.Rfxh4#
- 1...Bh6
- 2.Qe1#
- 1...Bb1
- 2.Rg4#
- 1...Bc2
- 2.Rg4#
- 1...Bd3
- 2.Rg4#
- 1...Bg4
- 2.Rxg4#
- 1...Bg6
- 2.Rg4#
- 1...Bh7
- 2.Rg4#
- 1...Sd1
- 2.Qxd4#
- 1...Sd3
- 2.Qxd4#
- 1...Sa4
- 2.Qxd4#
- 1...Sc4
- 2.Qxd4#
- 1...d3
- 2.Qxb2#
- 1...b4
- 2.Qa5#
- 1...Be4+
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- B(f);P_SPINB(g)::B(B)+R(C)
- B(f);CHECK,P_SPINB(g),SBLOCK::B(B)+R(C)
- B(f);P_SPINB(g)::B(B)+R(C),XB(f)
- B(g);OGATE,P_SPINB(f),XP(D)::B(B)+R(C),XB(g)
- P(d);OGATEB::QAR(I)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(g);P_SPINB(g),XR(C)::S(G)
- Refutation
- K(e);S_FLIGHT,XP(F)
- Try
- R(C);CHECK
- Vars
- B(g);P_SPINB(g)::R(C)
- Refutation
- K(e);P-FLIGHT
- Try
- R(C);CHECK
- Vars
- B(g);P_SPINB(g)::R(C)
- Refutation
- K(e);P-FLIGHT
- Try
- R(C);CHECK
- Refutation
- B(g);P_SPINB(g)
- Try
- R(C);CHECK,XP(c)
- Vars
- B(g);P_SPINB(g)::S(H)
- Refutation
- K(e);S_FLIGHT,XR(C)
- Try
- R(E);P_PINB(f),XB(g)
- Threat
- B(B)+R(C)
- Vars
- P(i);N_SPINB(f),OGATEB,XR(E)::QAB(I)
- Refutation
- S(a);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,P_SPINB(g),SBLOCK::B(B)+R(C)
- S(a);::QAB1(I),XP(c)
- Refutation
- B(g);P_SPINB(g),XR(C)
- Try
- P(D);XB(g)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,SBLOCK::B(B)+R(C)
- P(i);OGATEB,XP(D)::QAB(I)
- B(f);::B(B)+R(C),XB(f)
- Refutation
- S(a);
- Try
- Actual
- Q(I);
- Vars
- B(f);CHECK,P_SPINB(g),SBLOCK::B(B)+R(C)
- B(g);P_SPINB(g),S_CUTB(f),XR(C)::QAR(I)
- B(g);OGATE,P_SPINB(f),XP(D)::B(B)+R(C),XB(g)
- B(g);P_SPINB(f)::QAR(I)
- B(f);P_SPINB(g)::B(B)+R(C)
- B(f);P_SPINB(g)::B(B)+R(C),XB(f)
- S(a);OGATE,P_SPINP(c)::QAB1(I),XP(c)
- P(c);OGATEB,P_SPINS(a)::QAB(I),XS(a)
- P(d);OGATEB::QAR(I)
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).