MESON Chess Problem Database

Problem Display
PID: 132486 (5b2/4p1p1/1p2P1P1/1P1R1NB1/3pkp2/8/1K6/1N3Q2 w - - 0 1)

Koltanowski, George

Source?, 0000

5b2/4p1p1/1p2P1P1/1P1R1NB1/3pkp2/8/1K6/1N3Q2

#2

9 + 7

2425 San Francisco Chronicle 0000

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Sc3#
      • 2.Qxd3#
  • Tries
    • 1.Sg3+?
      • 1...Ke3
        • 2.Bxf4#
        • 2.Re5#
        • 2.Qe2#
      • 1...fxg3
        • 2.Qf5#
      • 1...Kxd5!
    • 1.Sxd4?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Qe2#
        • 2.Qf3#
      • 1...f3
        • 2.Sc3#
        • 2.Qxf3#
      • 1...Kxd5!
    • 1.Sh4?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Re5#
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...Kxd5!
    • 1.Sxe7?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Re5#
      • 1...f3
        • 2.Sd2#
      • 1...d3
        • 2.Qxd3#
        • 2.Qxf4#
      • 1...Bxe7!
    • 1.Rc5?
      • threat
        • 2.Sd2#
        • 2.Qe2#
      • 1...f3
        • 2.Sd2#
        • 2.Sg3#
      • 1...d3
        • 2.Sd2#
        • 2.Sc3#
        • 2.Qxf4#
      • 1...bxc5!
    • 1.Qg2+?
      • 1...Kd3
        • 2.Rxd4#
        • 2.Qc2#
      • 1...f3!
    • 1.Qd1?
      • 1...f3
        • 2.Qxd4#
      • 1...d3
        • 2.Sc3#
        • 2.Qxd3#
      • 1...Kxd5!
    • 1.Qf2?
      • 1...Kd3
        • 2.Rxd4#
        • 2.Qc2#
      • 1...f3
        • 2.Qxd4#
      • 1...d3
        • 2.Sc3#
      • 1...Kxd5!
  • Keys
    • 1.Se3!
      • 1...Kxe3
        • 2.Re5#
      • 1...dxe3
        • 2.Sc3#
      • 1...fxe3
        • 2.Qf5#
      • 1...f3
        • 2.Sd2#
      • 1...d3
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(c);OGATE,XS(F)::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
    • Try
      • S(F);XP(a)
      • Threat
        • QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
    • Try
      • S(F);
      • Threat
        • QAB1(B)
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
    • Try
      • S(F);XP(e)
      • Threat
        • QAR2(B)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::R(E)
        • P(c);::S(A)
      • Refutation
        • B(g);XS(F)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);XR(E)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(B);
      • Vars
        • P(c);SBLOCK::QAR1(B),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XR(E)
    • Try
      • Q(B);
      • Vars
        • P(c);SBLOCK::QAR1(B),XP(a)
        • P(a);N_GUARD::S(A)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • S(F);
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c),XS(F)::R(E)
      • P(a);N_GUARD,SBLOCK,XS(F)::S(A)
      • P(c);OGATE,XS(F)::QAB1(B)
      • P(c);::S(A)
      • P(a);::QAR1(B),XP(c)
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