MESON Chess Problem Database

Problem Display
PID: 247372 (8/1Pr1n3/KP2RN2/2k5/PpN4R/1n1P4/b2P4/8 w - - 0 1)

Popov, Mikhail Nikolov

Stella Polaris, 1967

8/1Pr1n3/KP2RN2/2k5/PpN4R/1n1P4/b2P4/8

#2

10 + 6

279 Problemas 1974

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2?
      • threat
        • 2.Rc4#
      • 1...Sxd2
        • 2.d4#
      • 1...Sa1
        • 2.d4#
      • 1...Sc1
        • 2.d4#
      • 1...Sa5
        • 2.d4#
      • 1...Sd4!
    • 1.Sa3?
      • threat
        • 2.Rc4#
      • 1...Sxd2
        • 2.d4#
      • 1...Sa1
        • 2.d4#
      • 1...Sc1
        • 2.d4#
      • 1...Sa5
        • 2.d4#
      • 1...Sd4!
    • 1.Se5?
      • threat
        • 2.Rc4#
      • 1...Sxd2
        • 2.d4#
      • 1...Sa1
        • 2.d4#
      • 1...Sc1
        • 2.d4#
      • 1...Sa5
        • 2.d4#
      • 1...Sd4!
    • 1.Se4+?
      • 1...Kd5
        • 2.Rd6#
      • 1...Kd4!
    • 1.Sd7+?
      • 1...Kd5
        • 2.Rd6#
      • 1...Rxd7!
    • 1.Re5+?
      • 1...Kc6
        • 2.b8S#
      • 1...Sd5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...Sxd2
        • 2.d4#
      • 1...Sd4
        • 2.Se4#
      • 1...Sa1
        • 2.d4#
      • 1...Sc1
        • 2.d4#
      • 1...Sa5
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(E)
      • Vars
        • S(b);N_GUARD,XP(A)::P(B)
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
    • Try
      • S(D);
      • Threat
        • R1(E)
      • Vars
        • S(b);N_GUARD,XP(A)::P(B)
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
    • Try
      • S(D);
      • Threat
        • R1(E)
      • Vars
        • S(b);N_GUARD,XP(A)::P(B)
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
    • Try
      • S(I);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(H)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(H)
      • Refutation
        • R(e);XS(I)
    • Try
      • R(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P=S
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • S(D);
    • Threat
      • R1(E)
    • Vars
      • S(b);N_GUARD,XP(A)::P(B)
      • S(b);SBLOCK::S(I)
      • S(b);N_GUARD::P(B)
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