MESON Chess Problem Database
Problem Display
PID: 72742 (BK3Nr1/8/R7/1Pk1n2R/P2n4/P1p5/3Nq2b/5QB1 w - - 0 1)
Zaldo Zapirain, Juan
Tijdschrift vd KNSB, 1936
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Se4#
- 2.Qc4#
- 1...Qf3
- 2.Sb3#
- 2.Qc4#
- 1...Qc4
- 2.Se4#
- 2.Qxc4#
- 1...Qg4
- 2.Sb3#
- 2.Qc4#
- 1...Qxb5+
- 2.Qxb5#
- 1...Qxh5
- 2.Sb3#
- 2.Se4#
- 1...Qe1
- 2.Sb3#
- 2.Qc4#
- 1...Qf2
- 2.Se4#
- 2.Qc4#
- 1...Qg2
- 2.Sb3#
- 2.Qc4#
- 1...Qe3
- 2.Qc4#
- 1...Qe4
- 2.Sb3#
- 2.Sxe4#
- 2.Qc4#
- 1...Rxg1
- 2.Sd7#
- 1...Rg2
- 2.Se6#
- 2.Sd7#
- 1...Rg3
- 2.Se6#
- 2.Sd7#
- 1...Rg4
- 2.Se6#
- 2.Sd7#
- 1...Rg5
- 2.Se6#
- 1...Rg6
- 2.Sd7#
- 1...Rg7
- 2.Se6#
- 1...Rxf8+
- 2.Qxf8#
- 1...Qd1
- Tries
- 1.Qb1?
- threat
- 2.Qb4#
- 1...Qxb5+
- 2.Qxb5#
- 1...Qc4
- 2.Se4#
- 1...Rxf8+!
- threat
- 1.Qf6?
- threat
- 2.Qe7#
- 2.Qb6#
- 2.Qc6#
- 2.Qd6#
- 1...Rxf8+
- 2.Qxf8#
- 1...Qxh5
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Qxd2
- 2.Qc6#
- 1...Rxg1
- 2.Sd7#
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Bxg1
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...cxd2
- 2.Qc6#
- 1...Qf3
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Qf2
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Qg2
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Qe3
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Qe4
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Rg5
- 2.Se6#
- 2.Qe7#
- 2.Qb6#
- 2.Qd6#
- 1...Rg6
- 2.Se6#
- 2.Sd7#
- 1...Rg7
- 2.Se6#
- 2.Qb6#
- 2.Qc6#
- 2.Qd6#
- 1...Qxb5+!
- threat
- 1.Qf7?
- threat
- 2.Sb3#
- 2.Rc6#
- 2.Qd5#
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Rxf8+
- 2.Qxf8#
- 1...Qxh5
- 2.Sb3#
- 2.Se4#
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...Qxd2
- 2.Rc6#
- 2.Qd5#
- 2.Qc7#
- 1...Rxg1
- 2.Sd7#
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...Bxg1
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...cxd2
- 2.Rc6#
- 2.Qd5#
- 2.Qc7#
- 1...Qd1
- 2.Se4#
- 2.Rc6#
- 2.Qc4#
- 2.Qd5#
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Qf3
- 2.Sb3#
- 2.Qc4#
- 2.Qa7#
- 2.Qe7#
- 1...Qc4
- 2.Se4#
- 2.Rc6#
- 2.Qxc4#
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Qf2
- 2.Se4#
- 2.Qc4#
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...Qg2
- 2.Sb3#
- 2.Qc4#
- 2.Qa7#
- 2.Qe7#
- 1...Qe3
- 2.Qc4#
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...Qe4
- 2.Sb3#
- 2.Sxe4#
- 2.Qc4#
- 2.Qa7#
- 2.Qe7#
- 1...Rg5
- 2.Sb3#
- 2.Se6#
- 2.Qd5#
- 2.Qa7#
- 2.Qe7#
- 1...Rg6
- 2.Sb3#
- 2.Sd7#
- 2.Qd5#
- 1...Rg7
- 2.Sb3#
- 2.Se6#
- 2.Sd7#
- 2.Rc6#
- 2.Qd5#
- 1...Qxb5+!
- threat
- 1.Qb1?
- Keys
- 1.Be4!
- threat
- 2.Rc6#
- 1...Qxb5+
- 2.Qxb5#
- 1...Rxf8+
- 2.Qxf8#
- 1...Qxh5
- 2.Sb3#
- 1...Qxe4
- 2.Qc4#
- 1...Rxg1
- 2.Sd7#
- 1...Bxg1
- 2.Rxe5#
- 1...Qf2
- 2.Qc4#
- 1...Qe3
- 2.Qc4#
- 1...Rg5
- 2.Se6#
- 1...Rg6
- 2.Sd7#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- Q(a);CHECK,OGATE,XP(F)::QAR1(A),XQ(a)
- Q(a);N_SPINS(d),OGATE,P_SPINS(f)::QAR1(A)
- R(g);N_PINS(K),N_SPINS(d),P_SPINS(f),XB(B)::S(K)
- R(g);N_PINS(K)::S(K)
- R(g);CHECK,OGATE,XS(K)::QAB(A),XR(g)
- Tries
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- Q(a);CHECK,OGATE,XP(F)::QAR1(A),XQ(a)
- Q(a);N_GUARD,SBLOCK::S(C)
- Refutation
- R(g);CHECK,XS(K)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(g);CHECK,OGATE,XS(K)::QAB(A),XR(g)
- Q(a);XS(C)::QAR1(A)
- P(c);XS(C)::QAR1(A)
- Refutation
- Q(a);CHECK,XP(F)
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- R(g);CHECK,OGATE,XS(K)::QAB(A),XR(g)
- Refutation
- Q(a);CHECK,XP(F)
- Try
- Actual
- B(I);
- Threat
- R1(H)
- Vars
- Q(a);CHECK,OGATE,XP(F)::QAR1(A),XQ(a)
- R(g);CHECK,OGATE,XS(K)::QAB(A),XR(g)
- Q(a);XR(G)::S(C)
- Q(a);OGATE,XB(I)::QAR1(A)
- R(g);N_PINS(K),N_SPINS(d),P_SPINS(f),XB(B)::S(K)
- B(b);N_GUARD,N_SPINS(d),P_SPINS(f),XB(B)::R(G),XS(f)
- Q(a);N_SPINS(d),OGATE,P_SPINS(f)::QAR1(A)
- R(g);N_PINS(K)::S(K)
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).