MESON Chess Problem Database

Problem Display
PID: 46834 (4R2B/8/3pN3/pP1k1N1p/2rp3K/1B3P2/qp4Q1/1b1r1n2 w - - 0 1)

Kiss, Janos

1st Prize, Magyar Sakkelet, 1961

4R2B/8/3pN3/pP1k1N1p/2rp3K/1B3P2/qp4Q1/1b1r1n2

#2

9 + 11

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.fxe4#
    • 1...d3+
      • 2.f4#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Se7#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...d3+!
    • 1.Qe2?
      • threat
        • 2.Se7#
        • 2.Qxc4#
      • 1...d3+
        • 2.Qe4#
      • 1...Qxb3
        • 2.Se7#
      • 1...Bxf5
        • 2.Qxc4#
      • 1...Qa4
        • 2.Se7#
      • 1...Rc1
        • 2.Se7#
      • 1...Rd3
        • 2.Se7#
        • 2.Qe4#
      • 1...Bd3
        • 2.Se7#
      • 1...Be4
        • 2.Qxc4#
        • 2.Qxe4#
        • 2.fxe4#
      • 1...Sd2
        • 2.Se7#
      • 1...Se3!
    • 1.Qg4?
      • threat
        • 2.Se7#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...hxg4!
    • 1.Qg6?
      • threat
        • 2.Se7#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...d3+!
    • 1.Qg7?
      • threat
        • 2.Qb7#
      • 1...d3+
        • 2.Qd4#
      • 1...Qxb3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Se3#
      • 1...d3+
        • 2.Sfd4#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Se3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::P(C),XB(a)
    • P(g);CHECK,S_CUTB(a)::QAB(A)+P(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • B(a);OGATE,XS(F)::QAR2(A),XB(a)
      • Refutation
        • P(g);CHECK
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,S_CUTB(a)::QAB1(A)
        • Q(d);N_SPINR(f),XB(B)::S(F)
        • B(a);XS(F)::QAB1(A),XR(f)
        • Q(d);::S(F)
        • R(b);::S(F)
        • B(a);::S(F)
        • S(c);::S(F)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • B(a);OGATE,XS(F)::QAR2(A),XB(a)
      • Refutation
        • P(j);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • B(a);OGATE,XS(F)::QAR2(A),XB(a)
      • Refutation
        • P(g);CHECK
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(g);CHECK,S_CUTR(b)::QAR1(A)
      • Refutation
        • Q(d);N_SPINR(f),XB(B)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(F),DCHECK
    • Vars
      • P(g);CHECK,S_CUTB(a)::QAR(A)+S(F)
      • B(a);OGATE,P_SPINB(a),XS(F)::QAR2(A),XB(a)
      • S(c);::QAR(A)+S(F),DCHECK,XS(c)
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