MESON Chess Problem Database

Problem Display
PID: 153355 (2R2B2/4r3/1rn4Q/1n1pR3/1ppkN1P1/1qp3p1/1p6/4N1KB w - - 0 1)

Kirillov, Valery Afanasievich

Maslov, Boris Grigorevich

Mishko, Mikhail

3rd Prize, Russian Problemists Association-80 JT, 2006

2R2B2/4r3/1rn4Q/1n1pR3/1ppkN1P1/1qp3p1/1p6/4N1KB

#2

9 + 12

15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qf6#
    • 1...Rxe5
      • 2.Bc5#
    • 1...Sxe5
      • 2.Qxb6#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Rxd5#
        • 2.Qe3#
      • 1...Kxc5
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Sf3#
      • 1...Rxe5
        • 2.Sf3#
      • 1...Sxe5
        • 2.Qf4#
      • 1...Rd7
        • 2.Sf3#
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sc7
        • 2.Qe3#
      • 1...g2
        • 2.Qe3#
      • 1...c2!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Qe3#
      • 1...Kxc3
        • 2.Qe3#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Sf3#
      • 1...Qxc3
        • 2.Rxd5#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Sxe5
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);OGATEB,S_FLIGHT,XR(F)::QAB1(G)
    • R(l);OGATE,SBLOCK,XR(F)::B(I)
    • S(k);OGATE,SBLOCK,XR(F)::QAB(G),XR(j)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P_SPINP(i),P_SPINR(l),P_SPINS(k),S_FLIGHT,XS(D)::R1(F),XP(i)
        • K(g);S_FLIGHT,XR(F)::S(A)
        • R(l);XR(F)::S(A)
        • S(k);XR(F)::QAR2(G)
        • S(h);::QAB1(G)
        • P(d);::QAB1(G)
      • Refutation
        • P(c);
  • Actual
    • S(D);XP(c)
    • Threat
      • QAB1(G)
    • Vars
      • K(g);S_FLIGHT,XS(D)::QAR2(G)
      • K(g);P_SPINP(i),P_SPINR(l),P_SPINS(k),S_FLIGHT::R1(F),XP(i)
      • K(g);S_FLIGHT,XR(F)::S(A)
      • Q(b);SBLOCK,XS(D)::R1(F),XP(i)
      • R(l);SBLOCK,XR(F)::QAR2(G)
      • S(k);SBLOCK,XR(F)::S(D)
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