MESON Chess Problem Database
Problem Display
PID: 137286 (3R1Q2/b1P3N1/b3BN2/q2p3K/1P1kPP1n/1P1p4/n2B3p/4R3 w - - 0 1)
Ellerman, Arnoldo
Partizan, 1961
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Rxd5#
- 1...Qb6
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Qa3
- 2.Rxd5#
- 1...Qa4
- 2.Rxd5#
- 1...Bb5
- 2.Rxd5#
- 1...Bc5
- 2.Rxd5#
- 1...Sc3
- 2.Be3#
- 1...Sg2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Qxb4
- Tries
- 1.Sg4?
- threat
- 2.Qf6#
- 1...Qxb4
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sxb4!
- threat
- 1.Sd7?
- threat
- 2.Qf6#
- 1...dxe4+
- 2.Sc5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Qxc7!
- threat
- 1.Sh7?
- threat
- 2.Qf6#
- 1...Qxb4
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sxb4!
- threat
- 1.Sfe8?
- threat
- 2.Qf6#
- 1...Qxb4
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sxb4!
- threat
- 1.Sg8?
- threat
- 2.Qf6#
- 1...Qxb4
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sxb4!
- threat
- 1.Bh3?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bc8!
- threat
- 1.Bg4?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bc8!
- threat
- 1.Bxd5?
- threat
- 2.Se6#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qb6
- 2.Bc6#
- 1...Bc8!
- threat
- 1.Bf5?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bc8!
- threat
- 1.Bd7?
- threat
- 2.Se6#
- 1...dxe4+
- 2.Bb5#
- 1...Qb6!
- threat
- 1.Bf7?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bc8!
- threat
- 1.Bc8?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bxc8!
- threat
- 1.Bg8?
- threat
- 2.Se6#
- 1...Qb6
- 2.Rxd5#
- 1...Bc8!
- threat
- 1.Qc5+?
- 1...Bxc5
- 2.Rxd5#
- 1...Qxc5!
- 1...Bxc5
- 1.Qd6?
- threat
- 2.Qe5#
- 1...Qxb4
- 2.Qxd5#
- 1...Qxc7
- 2.Qxd5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sxb4!
- threat
- 1.Sg4?
- Keys
- 1.Sxd5!
- threat
- 2.Qf6#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qxb4
- 2.Sxb4#
- 1...Qxc7
- 2.Sxc7#
- 1...Sxb4
- 2.Bc3#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- threat
- 1.Sxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(f);N_GUARD,XP(D)::R1(L),XP(g)
- Q(f);N_GUARD::R1(L),XP(g)
- Q(f);N_GUARD,XP(J)::R1(L),XP(g)
- B(h);S_CUTQ(f)::R1(L),XP(g)
- B(i);S_CUTQ(f)::R1(L),XP(g)
- S(a);SBLOCK::B(B)
- S(e);N_GUARD::S(K)
- S(e);N_GUARD::S(K),XS(e)
- Tries
- Try
- S(I);
- Threat
- QAB(M)
- Vars
- Q(f);N_GUARD,XP(D)::R1(L),XP(g)
- Q(f);N_GUARD,XP(J)::R1(L),XP(g)
- S(e);N_GUARD::S(K)
- Refutation
- S(a);XP(D)
- Try
- S(I);N_PINP(g)
- Threat
- QAB(M)
- Vars
- P(g);CHECK,XP(E)::R(L)+S(I)
- S(e);N_GUARD::S(K)
- Refutation
- Q(f);XP(J)
- Try
- S(I);
- Threat
- QAB(M)
- Vars
- Q(f);N_GUARD,XP(D)::R1(L),XP(g)
- Q(f);N_GUARD,XP(J)::R1(L),XP(g)
- S(e);N_GUARD::S(K)
- Refutation
- S(a);XP(D)
- Try
- S(I);
- Threat
- QAB(M)
- Vars
- Q(f);N_GUARD,XP(D)::R1(L),XP(g)
- Q(f);N_GUARD,XP(J)::R1(L),XP(g)
- S(e);N_GUARD::S(K)
- Refutation
- S(a);XP(D)
- Try
- S(I);
- Threat
- QAB(M)
- Vars
- Q(f);N_GUARD,XP(D)::R1(L),XP(g)
- Q(f);N_GUARD,XP(J)::R1(L),XP(g)
- S(e);N_GUARD::S(K)
- Refutation
- S(a);XP(D)
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);
- Try
- B(H);P_SPINB(H),XP(g)
- Threat
- S(K)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(H)::R1(L),XQ(f)
- Q(f);N_PINB(H)::R(L)+B(H)
- Refutation
- B(h);
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);
- Try
- B(H);N_PINP(g)
- Threat
- S(K)
- Vars
- P(g);CHECK,OGATEB,XP(E)::R(L)+B(H)
- Refutation
- Q(f);
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);XB(H)
- Try
- B(H);
- Threat
- S(K)
- Vars
- Q(f);N_GUARD::R1(L),XP(g)
- Refutation
- B(h);
- Try
- Q(M);CHECK
- Vars
- B(i);XQ(M)::R1(L),XP(g)
- Refutation
- Q(f);XQ(M)
- Try
- Q(M);
- Threat
- QAB1(M)
- Vars
- Q(f);N_GUARD,XP(D)::QAR1(M),XP(g)
- Q(f);N_GUARD,XP(J)::QAR1(M),XP(g)
- S(e);N_GUARD::S(K)
- Refutation
- S(a);XP(D)
- Try
- Actual
- S(I);P_SPINS(I),XP(g)
- Threat
- QAB(M)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(I)::R1(L),XQ(f)
- Q(f);N_PINS(I),XP(D)::R(L)+S(I),XQ(f)
- Q(f);N_PINS(I),XP(J)::R(L)+S(I),XQ(f)
- S(a);N_GUARD,XP(D)::B(B)
- S(e);N_GUARD::S(K)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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