MESON Chess Problem Database
Problem Display
PID: 139802 (q2R2B1/3b4/p4B1P/Q1PrN1K1/1pPkp3/4N2R/2Prp3/1n6 w - - 0 1)
Ellerman, Arnoldo
Ajedrez Argentino, 1925
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Kc3
- 2.Qa1#
- 1...Rxc2
- 2.Sxc2#
- 1...Rxc5
- 2.Sf5#
- 1...Rxe5+
- 2.Sf5#
- 1...Rd6
- 2.Sc6#
- 1...Ba4
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sf7#
- 1...Bc6
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Kc3
- Tries
- 1.Kf4?
- threat
- 2.Sf3#
- 2.Sc6#
- 1...Kc3
- 2.Qa1#
- 1...Rxc2
- 2.Sxc2#
- 1...Rxe5
- 2.Sf5#
- 2.Bxe5#
- 1...Bb5
- 2.Sd3#
- 1...Qc6
- 2.Sf3#
- 2.Sxc6#
- 1...Bc6
- 2.Sf5#
- 2.Sd3#
- 2.Sf3#
- 2.S5g4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 1...Qb8!
- threat
- 1.Bxd5?
- threat
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...Kc3
- 2.Sd3#
- 2.Qa1#
- 1...Qxd8
- 2.Sc6#
- 1...Rxc2
- 2.Sxc2#
- 1...Bxh3
- 2.S5g4#
- 1...Bb5
- 2.Sd3#
- 2.Sd7#
- 1...Qc6
- 2.Sxc6#
- 1...Qb8
- 2.Sc6#
- 1...Rd3
- 2.Sxd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...Ba4
- 2.Sf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bg4
- 2.Sd3#
- 2.S5xg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf5
- 2.Sxf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bc6
- 2.Sf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Be6
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bc8
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Be8
- 2.Sf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Qxd5!
- threat
- 1.cxd5?
- threat
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Kc3
- 2.Sd3#
- 2.Qa1#
- 1...Qxd8
- 2.Sc6#
- 2.Qxb4#
- 1...Rxc2
- 2.Sxc2#
- 1...Bxh3
- 2.S5c4#
- 2.S5g4#
- 1...Bb5
- 2.Sd3#
- 2.Sd7#
- 1...Qc6
- 2.Sxc6#
- 2.Qxb4#
- 1...Qb7
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...Qb8
- 2.Sc6#
- 1...Rd3
- 2.Sxd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Ba4
- 2.Sf5#
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Bg4
- 2.Sd3#
- 2.S5c4#
- 2.S5xg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Bf5
- 2.Sxf5#
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Bc6
- 2.Sf5#
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Be6
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Bc8
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Be8
- 2.Sf5#
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qxb4#
- 1...Sa3
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...b3
- 2.Sd3#
- 2.S5c4#
- 2.S5g4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 2.Qb4#
- 1...Qxd5!
- threat
- 1.Kf4?
- Keys
- 1.Kg6!
- threat
- 2.Sc6#
- 1...Bf5+
- 2.Sxf5#
- 1...Be8+
- 2.Sf7#
- 1...Kc3
- 2.Qa1#
- 1...Rxc2
- 2.Sxc2#
- 1...Rxe5
- 2.Sf5#
- 1...Bxh3
- 2.S5g4#
- 1...Bb5
- 2.Sd3#
- 1...Qc6
- 2.Sxc6#
- 1...Bc6
- 2.Sf5#
- 2.Sd3#
- 2.S5g4#
- 2.Sxc6#
- 2.Sf7#
- threat
- 1.Kg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- K(e);P_SPINP(d),S_FLIGHT::QAB(E)
- R(b);XP(A)::S(B),XR(b)
- R(g);P_SPINB(i),XP(F)::S(B)
- R(g);CHECK,P_SPINB(i),P_SPINR(g),XS(G)::S(B)
- R(g);N_PINS(G)::B(I)+S(G),DCHECK
- B(i);N_GUARD,P_SPINR(g)::S(B)
- Tries
- Try
- K(H);N_SPINS(G),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- K(e);P_SPINP(d),S_FLIGHT::QAB(E)
- R(b);XP(A)::S(B),XR(b)
- B(i);P_SPINR(g)::B(I)+S(G)
- Refutation
- Q(j);P_PINS(G)
- Try
- B(L);N_SPINS(G),XR(g)
- Threat
- DUALS(6)
- Vars
- Q(j);P_PINB(I),XR(K)::B(I)+S(G),DCHECK
- R(b);XP(A)::S(B),XR(b)
- B(i);XR(C)::B(I)+S(G)
- Q(j);::B(I)+S(G),DCHECK,XQ(j)
- Q(j);::B(I)+S(G),DCHECK
- Refutation
- Q(j);P_PINS(G),XB(L)
- Try
- P(D);N_SPINS(G),XR(g)
- Threat
- DUALS(8)
- Vars
- R(b);XP(A)::S(B),XR(b)
- Q(j);::B(I)+S(G),DCHECK
- Refutation
- Q(j);P_PINS(G),XP(D)
- Try
- Actual
- K(H);N_SPINS(G),P-FLIGHT
- Threat
- B(I)+S(G),DCHECK
- Vars
- B(i);CHECK,N_GUARD,P_SPINR(g)::S(B),XB(i)
- B(i);CHECK,P_SPINR(g)::B(I)+S(G)
- K(e);P_SPINP(d),S_FLIGHT::QAB(E)
- R(b);XP(A)::S(B),XR(b)
- R(g);P_SPINB(i),P_SPINR(g),XS(G)::S(B)
- B(i);P_SPINR(g),XR(C)::B(I)+S(G)
- B(i);P_SPINR(g)::B(I)+S(G)
- Q(j);P_PINB(I)::B(I)+S(G),DCHECK,XQ(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).