MESON Chess Problem Database
Problem Display
PID: 140403 (1b6/1N6/b1QP4/r2PBRp1/R1n1k1P1/7n/B3PP2/KN1r4 w - - 0 1)
Ellerman, Arnoldo
Problemas, 1945
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxb1+
- 2.Bxb1#
- 1...Rd2
- 2.Sxd2#
- 2.Sc3#
- 1...Rd4
- 2.Sc3#
- 1...Rdxd5
- 2.Sd2#
- 2.Sc3#
- 1...Rxa4
- 2.Sc5#
- 1...Rc5
- 2.Sxc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bb5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Rxb1+
- Tries
- 1.Bc3?
- threat
- 2.Qe8#
- 1...Rxb1+
- 2.Bxb1#
- 1...Rdxd5
- 2.Sd2#
- 1...Rxa4
- 2.Sc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Bb5
- 2.Sc5#
- 1...Sf4
- 2.Re5#
- 1...Rd4!
- threat
- 1.Bf6?
- threat
- 2.Qe8#
- 1...Rxb1+
- 2.Bxb1#
- 1...Rdxd5
- 2.Sd2#
- 2.Sc3#
- 1...Rxa4
- 2.Sc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Rd4
- 2.Sc3#
- 1...Bb5
- 2.Sc5#
- 1...Sf4!
- threat
- 1.Bg7?
- threat
- 2.Qe8#
- 1...Rxb1+
- 2.Bxb1#
- 1...Rdxd5
- 2.Sd2#
- 2.Sc3#
- 1...Rxa4
- 2.Sc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Rd4
- 2.Sc3#
- 1...Bb5
- 2.Sc5#
- 1...Sf4!
- threat
- 1.Bh8?
- threat
- 2.Qe8#
- 1...Rxb1+
- 2.Bxb1#
- 1...Rdxd5
- 2.Sd2#
- 2.Sc3#
- 1...Rxa4
- 2.Sc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Rd4
- 2.Sc3#
- 1...Bb5
- 2.Sc5#
- 1...Sf4!
- threat
- 1.Rxc4+?
- 1...Rd4
- 2.Sd2#
- 2.Sc3#
- 2.Rxd4#
- 1...Bxc4!
- 1...Rd4
- 1.Qxc4+?
- 1...Rd4
- 2.Sd2#
- 2.Sc3#
- 2.Qxd4#
- 1...Bxc4!
- 1...Rd4
- 1.Bc3?
- Keys
- 1.Bb2!
- threat
- 2.Qe8#
- 1...Rxb1+
- 2.Bxb1#
- 1...Rdxd5
- 2.Sd2#
- 1...Rxa4
- 2.Sc5#
- 1...Raxd5
- 2.Sc5#
- 1...Bxd6
- 2.Sxd6#
- 1...Rd4
- 2.Sc3#
- 1...Bb5
- 2.Sc5#
- 1...Sf4
- 2.Re5#
- threat
- 1.Bb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(a);N_PINS(B),N_SPINS(c)::S(B)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD::S(M),XR(e)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(g);S_CUTR(e)::S(M)
- B(h);XP(L)::S(M),XB(h)
- Tries
- Try
- B(I);
- Threat
- QAR(K)
- Vars
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(a);N_PINS(B),P_SPINR(a),XP(H)::S(B)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(h);XP(L)::S(M),XB(h)
- B(g);S_CUTR(e)::S(M)
- S(b);SBLOCK::R1(J)
- Refutation
- R(a);N_PINS(B),N_SPINS(c)
- Try
- B(I);
- Threat
- QAR(K)
- Vars
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(h);XP(L)::S(M),XB(h)
- R(a);N_PINS(B),N_SPINS(c)::S(B)
- B(g);S_CUTR(e)::S(M)
- Refutation
- S(b);
- Try
- B(I);
- Threat
- QAR(K)
- Vars
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(h);XP(L)::S(M),XB(h)
- R(a);N_PINS(B),N_SPINS(c)::S(B)
- B(g);S_CUTR(e)::S(M)
- Refutation
- S(b);
- Try
- B(I);
- Threat
- QAR(K)
- Vars
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(h);XP(L)::S(M),XB(h)
- R(a);N_PINS(B),N_SPINS(c)::S(B)
- B(g);S_CUTR(e)::S(M)
- Refutation
- S(b);
- Try
- R(F);CHECK,P_SPINB(C),XS(c)
- Refutation
- B(g);XR(F)
- Try
- Q(K);CHECK,XS(c)
- Refutation
- B(g);P_SPINB(g),XQ(K)
- Try
- Actual
- B(I);
- Threat
- QAR(K)
- Vars
- R(a);CHECK,OGATE,XS(B)::B(C),XR(a)
- R(a);N_PINS(B),P_SPINR(a),XP(H)::S(B)
- R(e);N_GUARD,N_SPINS(c),P_PINB(C),XR(F)::S(M)
- R(e);N_GUARD,P_SPINR(e),XP(H)::S(M)
- B(h);XP(L)::S(M),XB(h)
- R(a);N_PINS(B),N_SPINS(c),SBLOCK::S(B)
- B(g);S_CUTR(e)::S(M)
- S(b);SBLOCK::R1(J)
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).