MESON Chess Problem Database
Problem Display
PID: 10036 (4R3/2Q2N1P/q2p2KB/p5pP/4Nk2/3p1p1B/1n1P1p1P/6rn w - - 0 1)
Ellerman, Arnoldo
6th Prize, Problem (Zagreb), 1961
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qc8
- 2.Qxd6#
- 1...Qa7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Ra1
- 2.Bxg5#
- 1...Rb1
- 2.Bxg5#
- 1...Rc1
- 2.Bxg5#
- 1...Rd1
- 2.Bxg5#
- 1...Re1
- 2.Bxg5#
- 1...Rf1
- 2.Bxg5#
- 1...Sg3
- 2.Bxg5#
- 1...Qc4
- Tries
- 1.Sc3?
- threat
- 2.Sd5#
- 2.Re4#
- 1...Qc4
- 2.Qxd6#
- 1...Qb5
- 2.Re4#
- 1...Qb7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Re1
- 2.Sd5#
- 2.Bxg5#
- 1...Sg3
- 2.Sd5#
- 2.Bxg5#
- 1...Qc6!
- threat
- 1.Sg3?
- threat
- 2.Bxg5#
- 2.Re4#
- 1...Sxg3
- 2.Bxg5#
- 1...Qc4
- 2.Bxg5#
- 2.Qxd6#
- 1...Qb5
- 2.Re4#
- 1...Qb7
- 2.Bxg5#
- 2.Qxd6#
- 1...Qc6
- 2.Bxg5#
- 1...Qa8
- 2.Bxg5#
- 2.Qxd6#
- 1...Re1
- 2.Bxg5#
- 1...Rxg3!
- threat
- 1.Sc5?
- threat
- 2.Re4#
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Re1
- 2.Bxg5#
- 1...Sg3
- 2.Bxg5#
- 1...Qc6!
- threat
- 1.Sexg5?
- threat
- 2.Re4#
- 1...Rxg5+
- 2.Bxg5#
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Re1
- 2.Se4#
- 1...Sg3
- 2.Se4#
- 1...Qc6!
- threat
- 1.Sexd6?
- threat
- 2.Re4#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qc4
- 2.Sxc4#
- 1...Qb7
- 2.Sxb7#
- 1...Qa8
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sc8#
- 1...Re1
- 2.Bxg5#
- 1...Sg3
- 2.Bxg5#
- 1...Qc6!
- threat
- 1.Sf6?
- threat
- 2.Sd5#
- 2.Re4#
- 1...Qc4
- 2.Qxd6#
- 1...Qb5
- 2.Re4#
- 1...Qb7
- 2.Qxd6#
- 1...Qa8
- 2.Qxd6#
- 1...Re1
- 2.Sd5#
- 2.Bxg5#
- 1...Sg3
- 2.Sd5#
- 2.Bxg5#
- 1...Qc6!
- threat
- 1.Sfxg5?
- threat
- 2.Qf7#
- 1...Rxg5+
- 2.Bxg5#
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qc8
- 2.Qxd6#
- 1...Qa7
- 2.Qxd6#
- 1...Sg3
- 2.Sf7#
- 1...Qb5!
- threat
- 1.Sd8?
- threat
- 2.Qf7#
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qc8
- 2.Qxd6#
- 1...Qa7
- 2.Qxd6#
- 1...Sg3
- 2.Bxg5#
- 1...Qb5!
- threat
- 1.Sh8?
- threat
- 2.Qf7#
- 1...Qc4
- 2.Qxd6#
- 1...Qb7
- 2.Qxd6#
- 1...Qc8
- 2.Qxd6#
- 1...Qa7
- 2.Qxd6#
- 1...Sg3
- 2.Bxg5#
- 1...Qb5!
- threat
- 1.h8Q?
- threat
- 2.Qf6#
- 1...Qc8
- 2.Qxd6#
- 1...Sg3
- 2.Bxg5#
- 1...Qb5!
- threat
- 1.Sc3?
- Keys
- 1.Sfxd6!
- threat
- 2.Qf7#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qc4
- 2.Sxc4#
- 1...Qb5
- 2.Sxb5#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Qa7
- 2.Sb7#
- 1...Sg3
- 2.Bxg5#
- threat
- 1.Sfxd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(j);N_GUARD::QAB(H),XP(k)
- R(a);N_GUARD::B(G),XP(i)
- S(b);S_CUTR(a)::B(G),XP(i)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- Q(j);::R1(K)
- Refutation
- Q(j);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(b);XS(D)::B(G),XP(i)
- Q(j);::R1(K)
- Q(j);::B(G),XP(i)
- R(a);::B(G),XP(i)
- Refutation
- R(a);XS(D)
- Try
- S(D);
- Threat
- R1(K)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- R(a);N_GUARD::B(G),XP(i)
- S(b);S_CUTR(a)::B(G),XP(i)
- Refutation
- Q(j);
- Try
- S(D);P_PINP(k),P_SPINS(D),XP(i)
- Threat
- R1(K)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XS(D)::B(G),XR(a)
- Q(j);N_GUARD::QAB(H),XP(k)
- R(a);N_PINS(D)::B(G)+S(D)
- S(b);N_PINS(D)::B(G)+S(D)
- Refutation
- Q(j);
- Try
- S(D);P_SPINS(D),XP(k)
- Threat
- R1(K)
- Vars
- Q(j);CHECK,OGATE,P_SPINQ(j),XS(D)::QAB(H),XQ(j)
- Q(j);N_PINS(D)::QAB(H)+S(D),XQ(j)
- R(a);N_GUARD::B(G),XP(i)
- S(b);S_CUTR(a)::B(G),XP(i)
- Refutation
- Q(j);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- Q(j);::R1(K)
- Refutation
- Q(j);
- Try
- S(I);P_PINP(k),P_SPINS(I),XP(i)
- Threat
- QAR(H)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XS(I)::B(G),XR(a)
- Q(j);N_GUARD::QAB(H),XP(k)
- S(b);N_PINS(I)::B(G)+S(I)
- Refutation
- Q(j);
- Try
- S(I);
- Threat
- QAR(H)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- S(b);S_CUTR(a)::B(G),XP(i)
- Refutation
- Q(j);
- Try
- S(I);
- Threat
- QAR(H)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- S(b);S_CUTR(a)::B(G),XP(i)
- Refutation
- Q(j);
- Try
- P(J);
- Threat
- QAR2(J)
- Vars
- Q(j);N_GUARD::QAB(H),XP(k)
- S(b);S_CUTR(a)::B(G),XP(i)
- Refutation
- Q(j);
- Try
- Actual
- S(I);P_SPINS(I),XP(k)
- Threat
- QAR(H)
- Vars
- Q(j);CHECK,OGATE,P_SPINQ(j),XS(I)::QAB(H),XQ(j)
- Q(j);N_PINS(I)::QAB(H)+S(I),XQ(j)
- Q(j);N_PINS(I)::QAB(H)+S(I)
- S(b);S_CUTR(a)::B(G),XP(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).