MESON Chess Problem Database
Problem Display
PID: 49868 (8/2r5/p1rPP2B/p2N1R1R/3k4/Q3NPb1/B1p1P3/2K5 w - - 0 1)
Albarda, Johannes
3rd Comm., Nederlandse Bond van Probleemvrienden JT, 1951
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Qd3#
- 1...Be1
- 2.Rf4#
- 1...Bf2
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...Bh4
- 2.Rf4#
- 2.Rxh4#
- 1...Rc5
- Tries
- 1.Sf1?
- threat
- 2.Be3#
- 2.Qe3#
- 2.e3#
- 1...Bf4+
- 2.Rxf4#
- 1...Bf2
- 2.Rf4#
- 1...Rc3!
- threat
- 1.Sg2?
- threat
- 2.Be3#
- 2.Qe3#
- 2.e3#
- 1...Bf4+
- 2.Rxf4#
- 1...Bf2
- 2.Rf4#
- 1...Rc3!
- threat
- 1.Sc4?
- threat
- 2.Be3#
- 2.Qe3#
- 2.e3#
- 1...Bf4+
- 2.Rxf4#
- 1...Bf2
- 2.Rf4#
- 1...Be5!
- threat
- 1.Sg4?
- threat
- 2.Be3#
- 2.Qe3#
- 2.e3#
- 1...Bf4+
- 2.Rxf4#
- 1...Bf2
- 2.Rf4#
- 1...Rc3!
- threat
- 1.Sc3?
- threat
- 2.Sxc2#
- 2.Rd5#
- 1...Rxc3
- 2.Rd5#
- 1...Rxd6
- 2.Sxc2#
- 1...Rc5
- 2.Sxc2#
- 1...Be5
- 2.Sxc2#
- 1...Bf4!
- threat
- 1.Sb4?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Qd3#
- 1...Rc3
- 2.Rd5#
- 1...Rc5
- 2.Qd3#
- 1...Be5!
- threat
- 1.Sf4?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Qd3#
- 1...Rc5
- 2.Qd3#
- 1...Rc3!
- threat
- 1.Sb6?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Qd3#
- 1...Rc3
- 2.Rd5#
- 1...Rc5
- 2.Qd3#
- 1...Be5!
- threat
- 1.Sf6?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Qd3#
- 1...Rc3
- 2.Rd5#
- 1...Rc5
- 2.Qd3#
- 1...Be5!
- threat
- 1.Sxc7?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Sxc2#
- 2.Qb2#
- 2.Qc5#
- 2.Qd3#
- 1...Rc3
- 2.Rd5#
- 1...Rc5
- 2.Qxc5#
- 2.Qd3#
- 1...Be5!
- threat
- 1.Se7?
- threat
- 2.Rd5#
- 2.Qd3#
- 1...Rxd6
- 2.Qd3#
- 1...Rc3
- 2.Rd5#
- 1...Rc5
- 2.Qd3#
- 1...Be5!
- threat
- 1.Bg7+?
- 1...Be5
- 2.Bxe5#
- 2.Rf4#
- 2.Rh4#
- 1...Rxg7!
- 1...Be5
- 1.Rh4+?
- 1...Bf4
- 2.Rhxf4#
- 1...Bxh4!
- 1...Bf4
- 1.Qb4+?
- 1...Rc4
- 2.Sxc2#
- 1...axb4!
- 1...Rc4
- 1.Sf1?
- Keys
- 1.Re5!
- threat
- 2.Re4#
- 1...Bxe5
- 2.Sf5#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(f);SBLOCK::QAR1(D)
- B(b);N_GUARD::R(H)
- B(b);N_GUARD,P_PINS(E)::R(H),XB(b)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::R(H),XB(b)
- B(b);N_GUARD::R(H)
- Refutation
- R(f);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::R(H),XB(b)
- B(b);N_GUARD::R(H)
- Refutation
- R(f);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::R(H),XB(b)
- B(b);N_GUARD::R(H)
- Refutation
- B(b);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::R(H),XB(b)
- B(b);N_GUARD::R(H)
- Refutation
- R(f);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XS(G)::R1(H)
- R(f);XP(J)::S(E),XP(a)
- R(f);::S(E),XP(a)
- B(b);::S(E),XP(a)
- Refutation
- B(b);P_PINS(E)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XP(J)::QAR1(D)
- R(f);::R1(H)
- R(f);::QAR1(D)
- Refutation
- B(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XP(J)::QAR1(D)
- R(f);::QAR1(D)
- Refutation
- R(f);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XP(J)::QAR1(D)
- R(f);::R1(H)
- R(f);::QAR1(D)
- Refutation
- B(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XP(J)::QAR1(D)
- R(f);::R1(H)
- R(f);::QAR1(D)
- Refutation
- B(b);
- Try
- S(G);XR(g)
- Threat
- DUALS(2)
- Vars
- R(f);::R1(H)
- Refutation
- B(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);XP(J)::QAR1(D)
- R(f);::R1(H)
- R(f);::QAR1(D)
- Refutation
- B(b);
- Try
- B(L);CHECK
- Refutation
- R(g);XB(L)
- Try
- R(I);CHECK
- Vars
- B(b);N_GUARD,P_PINS(E),P_SPINB(b)::R(I),XB(b)
- Refutation
- B(b);XR(I)
- Try
- Q(D);CHECK
- Vars
- R(f);P_SPINR(f)::S(E),XP(a)
- Refutation
- P(d);XQ(D)
- Try
- Actual
- R(H);
- Threat
- R1(H)
- Vars
- B(b);SBLOCK,XR(H)::S(E)
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