MESON Chess Problem Database

Problem Display
PID: 61062 (4R3/Bbp5/3p3Q/2PrN3/4Br2/2p1k1NR/3pP1K1/3n4 w - - 0 1)

Hartong, Jan

Wilson, Francis Vaux

1st Prize, Magyar Sakkelet, 1972

4R3/Bbp5/3p3Q/2PrN3/4Br2/2p1k1NR/3pP1K1/3n4

#2

10 + 9

3753 FIDE Album (1971-1973) 1978
3770 BCSC Postal 1992-1993

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sg4#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Sf5#
      • 1...Kd4
        • 2.Qxf4#
      • 1...Bc8!
    • 1.Qxf4+?
      • 1...Kd4
        • 2.Sf5#
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Bf3#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Kxf4!
    • 1.cxd6+?
      • 1...Rd4
        • 2.Sc4#
        • 2.Sg4#
      • 1...Rc5
        • 2.Bxc5#
      • 1...c5!
    • 1.c6+?
      • 1...Rd4
        • 2.Sc4#
        • 2.Sg4#
      • 1...Rc5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Sf5#
      • 1...Rxd3+
        • 2.Sc6#
      • 1...Rd4+
        • 2.Se4#
      • 1...Rxc5+
        • 2.Sc6#
      • 1...Rxe5+
        • 2.c6#
      • 1...Kd4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(f);P_PINB(E),SBLOCK::S(G)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(C)
      • Vars
        • K(d);N_SPINR(e),S_FLIGHT::QAR2(H),XR(e)
      • Refutation
        • B(h);
    • Try
      • Q(H);CHECK,XR(e)
      • Refutation
        • K(d);S_FLIGHT,XQ(H)
    • Try
      • P(F);CHECK,XP(g)
      • Vars
        • R(f);N_GUARD,P_PINB(E)::B(I),XR(f)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • P(F);CHECK
      • Refutation
        • R(f);
  • Actual
    • B(E);
    • Threat
      • R(D)+S(C),DCHECK
    • Vars
      • R(f);CHECK,N_GUARD,XB(E)::R(J)+S(G)
      • R(f);CHECK,SBLOCK::R(D)+S(C)
      • R(f);CHECK,N_GUARD,XP(F)::R(J)+S(G)
      • R(f);CHECK,N_GUARD,XS(G)::B(I)+P(F)
      • K(d);N_SPINR(e),S_FLIGHT::QAR2(H),XR(e)
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