MESON Chess Problem Database

Problem Display
PID: 242231 (B7/5Q2/p3N2b/2P1k2p/4p3/r1n4K/8/B2N4 w - - 0 1)

Kisis, Imants J

Revista Romana de Sah, 1972

B7/5Q2/p3N2b/2P1k2p/4p3/r1n4K/8/B2N4

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bxc3#
    • 1...Ra5
      • 2.Bxc3#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Sc4#
      • 1...Sb1+
        • 2.Sd3#
      • 1...Sd1+
        • 2.Sd3#
      • 1...Sa2+
        • 2.Sd3#
      • 1...Se2+
        • 2.Sd3#
      • 1...Sa4+
        • 2.Sd3#
      • 1...Sb5+
        • 2.Sd3#
      • 1...Sd5+
        • 2.Sd3#
      • 1...Ra4!
    • 1.Se3?
      • threat
        • 2.Sc4#
        • 2.Qf5#
      • 1...Ra4
        • 2.Qf5#
      • 1...Bxe3!
    • 1.Sd8?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Qd5#
      • 1...e3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Sb1+
        • 2.Sf3#
      • 1...Sxd1+
        • 2.Sf3#
      • 1...Sa2+
        • 2.Sf3#
      • 1...Se2+
        • 2.Sf3#
      • 1...Sa4+
        • 2.Sf3#
      • 1...Sb5+
        • 2.Sf3#
      • 1...Sd5+
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qd5#
      • 1...e3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::B(A),XS(b)
  • Tries
    • Try
      • S(B);N_PINS(b)
      • Threat
        • S(B)
      • Vars
        • S(b);CHECK::B(A)+S(B),DCHECK
      • Refutation
        • R(a);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR1(F)
      • Refutation
        • B(g);XS(B)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(d);S_FLIGHT::QAR1(F)
      • Refutation
        • P(c);
  • Actual
    • S(E);N_PINS(b)
    • Threat
      • S(E)
    • Vars
      • S(b);CHECK::B(A)+S(E),DCHECK
      • S(b);CHECK,XS(B)::B(A)+S(E),DCHECK
      • K(d);P_SPINS(b),S_FLIGHT,XS(E)::QAR1(F)
      • P(c);N_GUARD::S(E)
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