MESON Chess Problem Database

Problem Display
PID: 209483 (8/8/5R2/7p/3Pk1nQ/2P5/1N6/4K2R w K - 0 1)

Ingre, Bengt

Suomen Shakki, 1991

8/8/5R2/7p/3Pk1nQ/2P5/1N6/4K2R

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kd1?
      • 1...Ke3
        • 2.Re1#
        • 2.Qe1#
      • 1...Kd5!
    • 1.Kf1?
      • 1...Ke3
        • 2.Qe1#
      • 1...Kd5!
    • 1.Rhf1?
      • 1...Kd5
        • 2.Qh1#
      • 1...Ke3!
    • 1.Rg1?
      • 1...Kd5
        • 2.Qh1#
      • 1...Ke3!
    • 1.Rh2?
      • 1...Ke3
        • 2.Re2#
      • 1...Kd5!
    • 1.Qg3?
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qg2#
        • 2.Qf3#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sxf6!
    • 1.Qxg4+?
      • 1...Ke3
        • 2.Rh3#
        • 2.Rf3#
        • 2.Re6#
        • 2.Qe2#
        • 2.Qf3#
        • 2.Qe6#
        • 2.Qf4#
      • 1...Kd5
        • 2.Rxh5#
        • 2.Qf3#
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qg2#
        • 2.c4#
      • 1...hxg4!
  • Keys
    • 1.0-0!
      • 1...Ke3
        • 2.Qe1#
      • 1...Kd5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB(F)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB(F)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT::R1(B)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
    • Try
      • Q(F);N_PINS(b)
      • Threat
        • QAB1(F)
      • Vars
        • S(b);N_GUARD::QAR1(F)
        • S(b);N_GUARD::QAR1(F),XS(b)
      • Refutation
        • S(b);XR(G)
    • Try
      • Q(F);CHECK,XS(b)
      • Refutation
        • P(c);XQ(F)
  • Actual
    • K(A);0-0
    • Vars
      • K(a);N_SPINS(b),P-FLIGHT::QAR2(F)
      • K(a);N_SPINS(b),S_FLIGHT::QAB(F)
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