MESON Chess Problem Database

Problem Display
PID: 758 (8/8/3p4/1B2P2R/P3k2p/2PN3K/4N3/Q5B1 w - - 0 1)

Matthews, Robin CO

2nd Prize, British Chess Magazine, 1951

8/8/3p4/1B2P2R/P3k2p/2PN3K/4N3/Q5B1

#2

10 + 3

3105 FIDE Album (1945-1955) 1964
3174 The Two-move Chess Problem Tradition and Development 1966
14609 Mostly Three=Movers 1995

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Kf3
        • 2.Rf5#
        • 2.Qd1#
        • 2.Qf1#
      • 1...Kd5
        • 2.Sf4#
        • 2.Qa2#
      • 1...hxg3!
    • 1.Sd4?
      • 1...dxe5
        • 2.Rxe5#
      • 1...d5
        • 2.Rxh4#
        • 2.Qe1#
      • 1...Kd5!
    • 1.Se1?
      • 1...dxe5
        • 2.Bc6#
      • 1...d5
        • 2.Bd3#
        • 2.Qb1#
      • 1...Kd5!
    • 1.Sc5+?
      • 1...Kf3
        • 2.Rf5#
        • 2.Qf1#
      • 1...Kd5
        • 2.Sf4#
        • 2.Qd1#
        • 2.Qa2#
        • 2.c4#
        • 2.e6#
      • 1...dxc5!
    • 1.Rxh4+?
      • 1...Kf3
        • 2.Sd4#
        • 2.Se1#
        • 2.Qf1#
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf5!
    • 1.Qd1?
      • 1...Kf3
        • 2.Sg3#
      • 1...Kd5
        • 2.Sc5#
      • 1...dxe5
        • 2.Bc6#
      • 1...d5!
    • 1.Qe1?
      • 1...Kf3
        • 2.Sd4#
      • 1...Kd5
        • 2.Sef4#
      • 1...d5
        • 2.Sd4#
      • 1...dxe5!
  • Keys
    • 1.Qb1!
      • 1...Kf3
        • 2.Se1#
      • 1...Kd5
        • 2.Sdf4#
      • 1...dxe5
        • 2.Bc6#
      • 1...d5
        • 2.Se1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Vars
        • P(c);OGATE,XP(I)::R1(J),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • P(c);N_GUARD,XP(I)::B(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • P(c);XS(E)
    • Try
      • R(J);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)+S(C)
        • K(a);S_FLIGHT::QAR(A)+S(E)
        • P(c);N_GUARD,XP(I)::B(H)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::S(C)
        • P(c);SBLOCK::QAR(A)+S(C)
      • Refutation
        • P(c);XP(I)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::S(E)
      • P(c);N_GUARD,XP(I)::B(H)
      • P(c);SBLOCK::QAB(A)+S(E)
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