MESON Chess Problem Database

Problem Display
PID: 248421 (8/3p1q2/1ppB1pp1/Rb5p/Npkr1Q2/p7/2P1RPB1/7K w - - 0 1)

Kirillov, Valery Afanasievich

Salai (Snr), Ladislav

5th HM., Novi Sad Olympic Ty., 1990

8/3p1q2/1ppB1pp1/Rb5p/Npkr1Q2/p7/2P1RPB1/7K

#2

9 + 12

14867 BCPS Library 2021
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
  • Tries
    • 1.Re3?
      • threat
        • 2.Sxb6#
      • 1...Bxa4
        • 2.Bf1#
      • 1...bxa5
        • 2.Sb6#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rxf4!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Re5#
      • 1...Qd5+
        • 2.Re4#
      • 1...Kd5
        • 2.Sxb6#
      • 1...Rxf4
        • 2.Rd2#
      • 1...Bxa4
        • 2.Re3#
      • 1...Re4
        • 2.Rd2#
        • 2.Qxe4#

Anticipated by 64990(1986-1987)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATEB::QAR2(G),XR(d)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(F),XP(g)
      • Vars
        • B(e);XS(F)::B(E)
        • P(g);XR(H)::S(F)
        • R(d);OGATEB::QAR2(G),XR(d)
      • Refutation
        • R(d);N_SPINR(d),XQ(G)
  • Actual
    • B(E);
    • Threat
      • B(E)+R(C)
    • Vars
      • Q(l);CHECK,SBLOCK::B(E)+R(C)
      • K(c);N_SPINR(d),P_SPINB(e),S_FLIGHT::S(F),XP(g)
      • R(d);N_SPINR(d),XQ(G)::B(E)+R(C)
      • B(e);XS(F)::B(E)+R(C)
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