MESON Chess Problem Database
Problem Display
PID: 235660 (3BR3/1p1n1p2/7K/N2p1B1b/1P1k4/nR1N2p1/2pPp3/r2Q2q1 w - - 0 1)
Haring, Jacobus
Norsk Sjakkblad, 1958
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Qxa1#
- 1...Qh2
- 2.Qxa1#
- 1...Qe3+
- 2.dxe3#
- 1...Qg2
- 2.Qxa1#
- 1...Ra2
- 2.Qxg1#
- 1...Sb1
- 2.Qxg1#
- 1...Sc5
- 2.Bf6#
- 1...Se5
- 2.Bb6#
- 1...Sb6
- 2.Bxb6#
- 2.Bf6#
- 1...Sf6
- 2.Bb6#
- 2.Bxf6#
- 1...Sb8
- 2.Bb6#
- 2.Bf6#
- 1...Sf8
- 2.Bb6#
- 2.Bf6#
- 1...c1S
- 2.Qxg1#
- 1...c1B
- 2.Qxg1#
- 1...e1S
- 2.Qxa1#
- 1...e1B
- 2.Qxa1#
- 1...Qf2
- Tries
- 1.Sc1?
- threat
- 2.Rd3#
- 2.Qxg1#
- 1...Qe3+
- 2.dxe3#
- 1...Qxd1
- 2.Rd3#
- 1...Rxc1
- 2.Rd3#
- 1...cxd1Q
- 2.Rd3#
- 1...cxd1S
- 2.Rd3#
- 1...cxd1B
- 2.Rd3#
- 1...cxd1R
- 2.Rd3#
- 1...exd1Q
- 2.Rd3#
- 1...exd1S
- 2.Rd3#
- 1...exd1B
- 2.Rd3#
- 1...exd1R
- 2.Rd3#
- 1...e1Q
- 2.Rd3#
- 1...e1B
- 2.Rd3#
- 1...e1R
- 2.Rd3#
- 1...Qf2
- 2.Rd3#
- 1...Qh2
- 2.Rd3#
- 1...Qe1
- 2.Rd3#
- 1...Qf1
- 2.Rd3#
- 1...Qh1
- 2.Rd3#
- 1...Qg2
- 2.Rd3#
- 1...Sc4
- 2.Rd3#
- 1...Sc5
- 2.Bf6#
- 2.Qxg1#
- 1...Se5
- 2.Bb6#
- 2.Qxg1#
- 1...e1S!
- threat
- 1.Se1?
- threat
- 2.Rd3#
- 2.Qxa1#
- 1...Qe3+
- 2.dxe3#
- 1...Qxe1
- 2.Rd3#
- 1...Rxd1
- 2.Rd3#
- 1...cxd1Q
- 2.Rd3#
- 1...cxd1S
- 2.Rd3#
- 1...cxd1B
- 2.Rd3#
- 1...cxd1R
- 2.Rd3#
- 1...exd1Q
- 2.Rd3#
- 1...exd1S
- 2.Rd3#
- 1...exd1B
- 2.Rd3#
- 1...exd1R
- 2.Rd3#
- 1...c1Q
- 2.Rd3#
- 1...c1B
- 2.Rd3#
- 1...c1R
- 2.Rd3#
- 1...Rb1
- 2.Rd3#
- 1...Rc1
- 2.Rd3#
- 1...Ra2
- 2.Rd3#
- 1...Sb1
- 2.Sxc2#
- 2.Rd3#
- 1...Sc4
- 2.Sxc2#
- 2.Rd3#
- 1...Sb5
- 2.Sxc2#
- 2.Rd3#
- 1...Sc5
- 2.Bf6#
- 2.Qxa1#
- 1...Se5
- 2.Bb6#
- 2.Qxa1#
- 1...c1S!
- threat
- 1.Sb2?
- threat
- 2.Rd3#
- 1...Qe3+
- 2.dxe3#
- 1...c1S
- 2.Qxg1#
- 1...Sc5
- 2.Bf6#
- 1...Se5
- 2.Bb6#
- 1...e1S!
- threat
- 1.Sf2?
- threat
- 2.Rd3#
- 1...e1S
- 2.Qxa1#
- 1...Sc5
- 2.Bf6#
- 1...Se5
- 2.Bb6#
- 1...c1S!
- threat
- 1.Sc5?
- threat
- 2.Rd3#
- 1...Qe3+
- 2.dxe3#
- 1...Sxc5
- 2.Bf6#
- 1...c1S
- 2.Qxg1#
- 1...e1S
- 2.Qxa1#
- 1...Se5!
- threat
- 1.Se5?
- threat
- 2.Rd3#
- 1...Qe3+
- 2.dxe3#
- 1...Sxe5
- 2.Bb6#
- 1...c1S
- 2.Qxg1#
- 1...e1S
- 2.Qxa1#
- 1...Sc5!
- threat
- 1.Bxd7?
- threat
- 2.Bb6#
- 2.Bf6#
- 1...Qe3+
- 2.dxe3#
- 1...c1Q
- 2.Bf6#
- 1...c1R
- 2.Bf6#
- 1...e1Q
- 2.Bb6#
- 1...e1R
- 2.Bb6#
- 1...Qf2
- 2.Bb6#
- 2.Qxa1#
- 1...Qf1
- 2.Bb6#
- 1...b6
- 2.Bxb6#
- 2.Bf6#
- 1...f6
- 2.Bb6#
- 2.Bxf6#
- 1...Sc4!
- threat
- 1.Bb6+?
- 1...Sc5
- 2.Bxc5#
- 1...Sxb6!
- 1...Sc5
- 1.Bf6+?
- 1...Se5
- 2.Bxe5#
- 1...Sxf6!
- 1...Se5
- 1.Sc1?
- Keys
- 1.Sf4!
- threat
- 2.Rd3#
- 1...c1S
- 2.Qxg1#
- 1...e1S
- 2.Qxa1#
- 1...Qe3
- 2.dxe3#
- 1...Sc5
- 2.Bf6#
- 1...Se5
- 2.Bb6#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::QAB(A),XR(a)
- Q(b);CHECK,OGATE::P(B),XQ(b)
- R(a);N_GUARD::QAB(A),XQ(b)
- S(e);S_CUTR(a)::QAB(A),XQ(b)
- S(k);N_GUARD::B(I)
- P(c);S_CUTR(a)::QAB(A),XQ(b)
- P(c);P_PINP(B),S_CUTR(a)::QAB(A),XQ(b)
- P(d);S_CUTQ(b)::QAB(A),XR(a)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE::QAR(A)+P(B)DCHECK,XQ(b)
- Q(b);XQ(A)::R1(C)
- R(a);XS(D)::R1(C)
- P(c);XQ(A)::R1(C)
- P(d);XQ(A)::R1(C)
- P(d);::R1(C)
- Q(b);::R1(C)
- S(e);::R1(C)
- Refutation
- P(d);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE::QAR(A)+P(B)DCHECK,XQ(b)
- Q(b);XS(D)::R1(C)
- R(a);XQ(A)::R1(C)
- P(c);XQ(A)::R1(C)
- P(d);XQ(A)::R1(C)
- P(c);P_PINP(B)::R1(C)
- P(c);::R1(C)
- R(a);::R1(C)
- Refutation
- P(c);
- Try
- S(D);
- Threat
- R1(C)
- Vars
- Q(b);CHECK,OGATE::QAR(A)+P(B)DCHECK,XQ(b)
- P(c);S_CUTR(a)::QAB(A),XQ(b)
- S(k);N_GUARD::B(I)
- Refutation
- P(d);
- Try
- S(D);
- Threat
- R1(C)
- Vars
- P(d);S_CUTQ(b)::QAB(A),XR(a)
- S(k);N_GUARD::B(I)
- Refutation
- P(c);
- Try
- S(D);
- Threat
- R1(C)
- Vars
- Q(b);CHECK,OGATE::QAR(A)+P(B)DCHECK,XQ(b)
- S(k);N_GUARD,XS(D)::B(I)
- P(c);S_CUTR(a)::QAB(A),XQ(b)
- P(d);S_CUTQ(b)::QAB(A),XR(a)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- R1(C)
- Vars
- Q(b);CHECK,OGATE::QAR(A)+P(B)DCHECK,XQ(b)
- S(k);N_GUARD,XS(D)::B(I)
- P(c);S_CUTR(a)::QAB(A),XQ(b)
- P(d);S_CUTQ(b)::QAB(A),XR(a)
- Refutation
- S(k);
- Try
- B(G);XS(k)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE::P(B),XQ(b)
- P(c);P_PINP(B)::B(I)
- P(c);::B(I)
- P(d);::B(I)
- Q(b);::B(I)
- Refutation
- S(e);
- Try
- B(I);CHECK
- Vars
- S(k);N_GUARD,P_SPINS(k)::B(I),XS(k)
- Refutation
- S(k);XB(I)
- Try
- B(I);CHECK
- Vars
- S(k);N_GUARD,P_SPINS(k)::B(I),XS(k)
- Refutation
- S(k);XB(I)
- Try
- Actual
- S(D);
- Threat
- R1(C)
- Vars
- P(c);S_CUTR(a)::QAB(A),XQ(b)
- P(d);S_CUTQ(b)::QAB(A),XR(a)
- Q(b);OGATE,P_PINS(D)::QAR(A)+P(B)DCHECK,XQ(b)
- S(k);N_GUARD::B(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).