MESON Chess Problem Database
Problem Display
PID: 18015 (2B5/3r1pqN/8/6p1/R2Bk1P1/6Q1/K1P5/bN6 w - - 0 1)
Hartong, Jan
Nanning, Frederik Willem
1st Prize, Tijdschrift vd KNSB, 1952
#2
9 + 6
| 3147 | Chess Problems: Introduction to an Art | 1963 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 5454 | Near Snap | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sf6#
- 1...Qf6
- 2.Sxf6#
- 1...Qf8
- 2.Sf6#
- 1...Qg8
- 2.Sf6#
- 1...Rxd4
- 2.Bb7#
- 1...Rd5
- 2.Sd2#
- 2.Qe3#
- 1...Rb7
- 2.Bxb7#
- 1...Bc3
- 2.Sxc3#
- 1...Bxd4
- 2.Sc3#
- 1...Qxd4
- Tries
- 1.Bxa1+?
- 1...Qd4
- 2.Sc3#
- 2.Sf6#
- 1...Rd4
- 2.Sc3#
- 2.Bb7#
- 1...Kd5!
- 1...Qd4
- 1.Bg1+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Bb2+?
- 1...Qd4
- 2.Sc3#
- 2.Sf6#
- 1...Rd4
- 2.Sc3#
- 2.Bb7#
- 1...Kd5!
- 1...Qd4
- 1.Bf2+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Bc3+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Kd5!
- 1...Qd4
- 1.Be3+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Bc5+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Be5+?
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Rd4
- 1.Bb6+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Bf6+?
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Rd4
- 1.Ba7+?
- 1...Qd4
- 2.Sf6#
- 1...Rd4
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 1...Kd5!
- 1...Qd4
- 1.Bxg7+?
- 1...Rd4
- 2.Sf6#
- 2.Bb7#
- 1...Bd4
- 2.Sc3#
- 2.Sf6#
- 1...Kd5!
- 1...Rd4
- 1.Bb7+?
- 1...Rd5
- 2.Sd2#
- 2.Qe3#
- 1...Rxb7!
- 1...Rd5
- 1.c4?
- threat
- 2.Qe3#
- 1...Qxd4
- 2.Sxg5#
- 1...Rxd4
- 2.Bf5#
- 1...Bxd4
- 2.Sd2#
- 1...Kxd4!
- threat
- 1.Bxa1+?
- Keys
- 1.Ra5!
- threat
- 2.Qe3#
- 1...Kxd4
- 2.Qd3#
- 1...Qxd4
- 2.Sxg5#
- 1...Rxd4
- 2.Bf5#
- 1...Bxd4
- 2.Sd2#
- threat
- 1.Ra5!
Anticipated by 17055(1945)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(f);N_GUARD,P_SPINQ(f),XB(F)::S(H)
- Q(f);N_GUARD::S(H),XQ(f)
- Q(f);N_GUARD::S(H)
- R(d);N_GUARD,P_SPINR(d),XB(F)::B(I)
- R(d);N_GUARD::B(I),XR(d)
- B(a);N_GUARD::S(A),XB(a)
- B(a);N_GUARD,P_SPINB(a),XB(F)::S(A)
- Tries
- Try
- B(F);CHECK,XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(H)
- R(d);P_SPINR(d)::B(I)
- B(a);P_SPINB(a)::S(A)
- Refutation
- K(b);S_FLIGHT
- Try
- B(F);CHECK,XQ(f)
- Refutation
- K(b);S_FLIGHT
- Try
- B(I);CHECK
- Refutation
- R(d);XB(I)
- Try
- P(C);
- Threat
- QAR1(D)
- Vars
- Q(f);N_GUARD,SBLOCK,XB(F)::S(H),XP(c)
- R(d);OGATE,SBLOCK,XB(F)::B(I)
- B(a);SBLOCK,XB(F)::S(A)
- Refutation
- K(b);P-FLIGHT,XB(F)
- Try
- Actual
- R(E);
- Threat
- QAR1(D)
- Vars
- K(b);P-FLIGHT,XB(F)::QAR1(D)
- Q(f);N_GUARD,SBLOCK,XB(F)::S(H),XP(c)
- R(d);OGATE,SBLOCK,XB(F)::B(I)
- B(a);SBLOCK,XB(F)::S(A)
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