MESON Chess Problem Database

Problem Display
PID: 11960 (b2nr1B1/8/1Q6/1p4RK/1P2k3/2ppp1B1/1b2P2n/1q2Nr2 w - - 0 1)

Loshinski, Lev Ilich

2/3 Prize, Szachy, 1973

b2nr1B1/8/1Q6/1p4RK/1P2k3/2ppp1B1/1b2P2n/1q2Nr2

#2

8 + 12

273 Mat Plus 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.exd3#
    • 1...Qa1
      • 2.exd3#
    • 1...Qc1
      • 2.exd3#
    • 1...Rxe1
      • 2.Bh7#
    • 1...Rg1
      • 2.Bh7#
    • 1...Rh1
      • 2.Bh7#
    • 1...Re5
      • 2.Rxe5#
    • 1...Rf8
      • 2.Re5#
    • 1...Rxg8
      • 2.Re5#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Sf3
      • 2.Bh7#
    • 1...Sc6
      • 2.Bd5#
    • 1...Se6
      • 2.Re5#
    • 1...Sb7
      • 2.Bd5#
    • 1...c2
      • 2.exd3#
  • Keys
    • 1.Qxb5!
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...Qa2
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf3
        • 2.Rg4#
      • 1...Sc6
        • 2.Qd5#
      • 1...Se6
        • 2.Qe5#
      • 1...c2
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::P(B),XP(f)
    • R(b);N_GUARD,XS(A)::B(H)
    • R(b);N_GUARD::B(H)
    • R(l);N_GUARD,P_PINR(E)::R1(E),XR(l)
    • R(l);N_GUARD::R1(E)
    • R(l);N_GUARD,XB(H)::R1(E)
    • B(j);N_GUARD::B(H),XB(j)
    • S(d);S_CUTR(b)::B(H)
    • S(k);S_CUTB(j)::B(H)
    • S(k);S_CUTR(l)::R1(E)
    • P(e);S_CUTQ(a)::P(B),XP(f)
  • Actual
    • Q(G);XP(i)
    • Threat
      • QAR2(G)
    • Vars
      • K(h);P-FLIGHT::QAR1(G)
      • Q(a);N_GUARD::QAB1(G),XP(f)
      • B(j);N_GUARD::QAB1(G),XB(j)
      • S(d);N_GUARD,S_CUTR(b)::R(E)
      • S(k);S_CUTB(j)::QAB1(G)
      • S(k);S_CUTR(l)::QAR1(G)
      • P(e);S_CUTQ(a)::QAB1(G),XP(f)
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