MESON Chess Problem Database

Problem Display
PID: 140942 (4n3/3pKp2/8/4k3/1Q1N2R1/4b3/b1p1R3/4r3 w - - 0 1)

Tomasevic, Milos

Liga Problemista, 1981/3

4n3/3pKp2/8/4k3/1Q1N2R1/4b3/b1p1R3/4r3

#2

5 + 8

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qb5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sf6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qd6#
  • Tries
    • 1.Sf3+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Kd5!
    • 1.Sc6+?
      • 1...Kf5
        • 2.Qe4#
      • 1...dxc6
        • 2.Qe4#
      • 1...Kd5!
    • 1.Rxe3+?
      • 1...Kd5
        • 2.Qb5#
      • 1...Rxe3!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Sd6
        • 2.Qc5#
      • 1...Sf6
        • 2.Rg5#
      • 1...d5
        • 2.Qf4#
      • 1...f5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(e);N_SPINB(d),P-FLIGHT::QAR2(B)
    • S(h);N_GUARD::QAB1(B),XS(h)
    • S(h);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);N_SPINB(d),P-FLIGHT::QAB1(B)
      • Refutation
        • K(e);N_SPINB(d),P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(e);N_SPINB(d),P-FLIGHT::QAB1(B)
        • P(f);XS(C)::QAR1(B)
      • Refutation
        • K(e);N_SPINB(d),P-FLIGHT
    • Try
      • R(A);CHECK,XB(d)
      • Vars
        • K(e);P-FLIGHT,P_PINR(A)::QAR2(B)
      • Refutation
        • R(a);XR(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(e);N_SPINB(d),P-FLIGHT::QAB1(B)
      • S(h);S_CUTP(f)::QAR2(B)
      • S(h);S_CUTP(g)::R(D)
      • P(f);SBLOCK::QAB1(B)
      • P(g);SBLOCK::QAB1(B)
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