MESON Chess Problem Database

Problem Display
PID: 42636 (7b/p3R2B/1p1B4/1P6/N1Pk4/N7/5Rn1/5nK1 w - - 0 1)

Haring, Jacobus

2nd HM., Schakend Nederland, 1960

7b/p3R2B/1p1B4/1P6/N1Pk4/N7/5Rn1/5nK1

#2

9 + 6

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Rxd2#
    • 1...Sh2
      • 2.Rd2#
    • 1...Sfe3
      • 2.Rd2#
    • 1...Sg3
      • 2.Rd2#
    • 1...Se1
      • 2.Rf4#
    • 1...Sge3
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sh4
      • 2.Rf4#
  • Tries
    • 1.Be5+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Bf6#
        • 2.Bg7#
        • 2.Bxh8#
      • 1...Bxe5!
    • 1.Bb1?
      • threat
        • 2.Re4#
      • 1...Sd2
        • 2.Rxd2#
      • 1...Sg3
        • 2.Rd2#
      • 1...Be5!
    • 1.Bc2?
      • threat
        • 2.Re4#
      • 1...Sd2
        • 2.Rxd2#
      • 1...Sg3
        • 2.Rd2#
      • 1...Be5!
    • 1.Rxf1?
      • threat
        • 2.Rd1#
      • 1...Se1
        • 2.Rf4#
      • 1...Se3
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Be5!
    • 1.Rxg2?
      • threat
        • 2.Rg4#
      • 1...Sd2
        • 2.Rxd2#
      • 1...Sh2
        • 2.Rd2#
      • 1...Se3
        • 2.Rd2#
      • 1...Sg3
        • 2.Rd2#
      • 1...Be5!
    • 1.Rf3?
      • threat
        • 2.Rd3#
        • 2.Re4#
      • 1...Be5
        • 2.Bxe5#
        • 2.Rd3#
      • 1...Sd2
        • 2.Rd3#
      • 1...Sg3
        • 2.Rd3#
      • 1...Se1
        • 2.Rf4#
        • 2.Re4#
      • 1...Sge3
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
        • 2.Re4#
      • 1...Sfe3!
    • 1.Rc7?
      • threat
        • 2.Sc2#
      • 1...Ke3
        • 2.Sc2#
      • 1...Sfe3
        • 2.Rd2#
      • 1...Sge3
        • 2.Rf4#
      • 1...Se1!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Bf4#
      • 1...Ke3
        • 2.Sc2#
      • 1...Be5
        • 2.Bc5#
      • 1...Sfe3
        • 2.Rd2#
      • 1...Sge3
        • 2.Rf4#
      • 1...Sf4
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::R(B),XS(a)
    • S(a);N_GUARD::R(B)
    • S(b);N_GUARD::R(B)
    • S(b);N_GUARD::R(B),XS(b)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • B(f);XB(G)
    • Try
      • B(I);
      • Threat
        • R1(H)
      • Vars
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);N_GUARD::R(B)
      • Refutation
        • B(f);
    • Try
      • B(I);
      • Threat
        • R1(H)
      • Vars
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);N_GUARD::R(B)
      • Refutation
        • B(f);
    • Try
      • R(B);XS(a)
      • Threat
        • R(B)
      • Vars
        • S(b);N_GUARD::R(B)
        • S(b);N_GUARD::R(B),XS(b)
      • Refutation
        • B(f);
    • Try
      • R(B);XS(b)
      • Threat
        • R(B)
      • Vars
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);N_GUARD::R(B)
      • Refutation
        • B(f);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R1(B)
        • S(b);N_GUARD::R(B)
      • Refutation
        • S(a);
    • Try
      • R(H);
      • Threat
        • S(C)
      • Vars
        • K(c);S_FLIGHT::S(C)
        • S(a);N_GUARD,SBLOCK::R(B)
        • S(b);N_GUARD,SBLOCK::R(B)
      • Refutation
        • S(b);
  • Actual
    • R(H);
    • Threat
      • R(H)+B(G)
    • Vars
      • K(c);S_FLIGHT::S(C)
      • B(f);SBLOCK::R(H)+B(G),DCHECK
      • S(a);N_GUARD,SBLOCK::R(B)
      • S(b);N_GUARD,SBLOCK::R(B)
      • S(b);::R(H)+B(G),XS(b)
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