MESON Chess Problem Database

Problem Display
PID: 103790 (8/8/4K3/8/3Nk1p1/8/1Q6/6N1 w - - 0 1)

Taranets, B

Serp i molot, 1986

8/8/4K3/8/3Nk1p1/8/1Q6/6N1

#2

4 + 2

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd3!
    • 1.Sde2?
      • threat
        • 2.Qd4#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kd3!
    • 1.Sb3?
      • threat
        • 2.Qd4#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd3!
    • 1.Sc6?
      • threat
        • 2.Qd4#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qe2+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kxd4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qe2#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe5#

Anticipated by 175712(1898), 73860(1938)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAB1(B)
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