MESON Chess Problem Database
Problem Display
PID: 71341 (8/7p/Q2p2pP/1rpR2K1/1PkP4/3N4/pPP3B1/r7 w - - 0 1)
Boros, Sandor
Magyar Sakkvilag, 1928
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rg1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- Tries
- 1.Kg4?
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rg1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...g5!
- 1...cxb4
- 1.Se5+?
- 1...Kxb4
- 2.Qa3#
- 1...dxe5!
- 1...Kxb4
- 1.Bf1?
- 1...Rxf1
- 2.Qxa2#
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Kxd5!
- 1...Rxf1
- 1.Bh1?
- 1...Rxh1
- 2.Qxa2#
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rg1+!
- 1...Rxh1
- 1.Bf3?
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...Rg1+!
- 1...cxb4
- 1.Be4?
- 1...cxb4
- 2.Qxb5#
- 1...cxd4
- 2.Qxb5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...Rg1+!
- 1...cxb4
- 1.Qa4?
- threat
- 2.Qb3#
- 1...Ra5
- 2.bxa5#
- 1...Rb6
- 2.b5#
- 1...Rb7
- 2.b5#
- 1...Rb8
- 2.b5#
- 1...Rxb4!
- threat
- 1.dxc5?
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rg1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...dxc5!
- 1...Rb1
- 1.Kg4?
- Keys
- 1.Rxd6!
- 1...cxb4+
- 2.Se5#
- 1...cxd4+
- 2.Bd5#
- 1...Rb1
- 2.Qxa2#
- 1...Rc1
- 2.Qxa2#
- 1...Rd1
- 2.Qxa2#
- 1...Re1
- 2.Qxa2#
- 1...Rf1
- 2.Qxa2#
- 1...Rg1
- 2.Qxa2#
- 1...Rh1
- 2.Qxa2#
- 1...cxb4+
- 1.Rxd6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAB(I),XP(b)
- R(a);N_GUARD,P_PINB(C)::QAB(I),XP(b)
- P(e);P_PINR(G),XP(E)::QAB1(I),XR(d)
- P(e);P_PINR(G),XP(F)::QAB1(I),XR(d)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- P(e);XP(E)::QAB1(I),XR(d)
- P(e);XP(F)::QAB1(I),XR(d)
- R(a);N_GUARD::QAB(I),XP(b)
- R(a);N_GUARD,P_PINB(C)::QAB(I),XP(b)
- Refutation
- P(g);
- Try
- S(D);CHECK
- Vars
- K(c);N_SPINR(d),P-FLIGHT,XP(E)::QAB1(I)
- Refutation
- P(f);XS(D)
- Try
- B(C);
- Vars
- R(a);N_GUARD,XB(C)::QAB(I),XP(b)
- P(e);P_PINR(G),XP(E)::QAB1(I),XR(d)
- P(e);P_PINR(G),XP(F)::QAB1(I),XR(d)
- R(a);N_GUARD::QAB(I),XP(b)
- Refutation
- K(c);N_SPINR(d),S_FLIGHT,XR(G)
- Try
- B(C);
- Vars
- R(a);N_GUARD,XB(C)::QAB(I),XP(b)
- P(e);P_PINR(G),XP(E)::QAB1(I),XR(d)
- P(e);P_PINR(G),XP(F)::QAB1(I),XR(d)
- R(a);N_GUARD::QAB(I),XP(b)
- Refutation
- R(a);CHECK
- Try
- B(C);
- Vars
- P(e);P_PINR(G),XP(E)::QAB1(I),XR(d)
- P(e);P_PINR(G),XP(F)::QAB1(I),XR(d)
- R(a);N_GUARD::QAB(I),XP(b)
- Refutation
- R(a);CHECK
- Try
- B(C);
- Vars
- P(e);P_PINR(G),XP(E)::QAB1(I),XR(d)
- P(e);P_PINR(G),XP(F)::QAB1(I),XR(d)
- R(a);N_GUARD::QAB(I),XP(b)
- Refutation
- R(a);CHECK
- Try
- Q(I);N_PINR(d)
- Threat
- QAB1(I)
- Vars
- R(d);OGATE::QAR(I)+P(E),XR(d)
- R(d);OGATE::QAR(I)+P(E)
- Refutation
- R(d);P_SPINR(d),XP(E)
- Try
- P(F);XP(e)
- Vars
- R(a);N_GUARD::QAB(I),XP(b)
- R(a);N_GUARD,P_PINB(C)::QAB(I),XP(b)
- Refutation
- P(f);XP(F)
- Try
- Actual
- R(G);XP(f)
- Vars
- P(e);CHECK,SBLOCK,XP(E)::S(D)
- P(e);CHECK,SBLOCK,XP(F)::B(C)
- R(a);N_GUARD::QAB(I),XP(b)
- R(a);N_GUARD,P_PINB(C)::QAB(I),XP(b)
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).