MESON Chess Problem Database

Problem Display
PID: 119132 (8/3Rp2r/2Kp1B2/2P1pp2/1p1kpRb1/pPp3P1/8/Q3NNb1 w - - 0 1)

Wirtanen, Erkki Aukusti

Problemas, 1970

8/3Rp2r/2Kp1B2/2P1pp2/1p1kpRb1/pPp3P1/8/Q3NNb1

#2

10 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd1#
    • 1...Bh3
      • 2.Qd1#
    • 1...d5
      • 2.Rxd5#
    • 1...exf6
      • 2.Rxd6#
    • 1...e6
      • 2.Rxd6#
  • Tries
    • 1.Sf3+?
      • 1...Kd3
        • 2.Qd1#
      • 1...Bxf3!
    • 1.Bxe7?
      • threat
        • 2.Rxd6#
      • 1...exf4
        • 2.Bf6#
      • 1...d5
        • 2.Rxd5#
      • 1...Rh6!
    • 1.Rb7?
      • threat
        • 2.Rxb4#
      • 1...dxc5
        • 2.Rd7#
      • 1...Be2!
    • 1.Qb1?
      • threat
        • 2.Qd3#
      • 1...c2
        • 2.Qa1#
      • 1...Be2!
  • Keys
    • 1.Rxf5!
      • threat
        • 2.Bxe5#
      • 1...Bxf5
        • 2.Qd1#
      • 1...exf6
        • 2.Rxd6#
      • 1...e3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(g);N_GUARD::QAR(A),XB(g)
    • B(g);N_GUARD::QAR(A)
    • P(j);OGATE::R1(J),XP(j)
    • P(k);N_GUARD,XB(I)::R(J),XP(j)
    • P(k);N_GUARD::R(J),XP(j)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT,P_SPINP(j)::QAR2(A)
      • Refutation
        • B(g);XS(B)
    • Try
      • B(I);XP(k)
      • Threat
        • R(J),XP(j)
      • Vars
        • P(h);OGATEB,XR(F)::B(I)
        • P(j);OGATE::R1(J),XP(j)
      • Refutation
        • R(l);
    • Try
      • R(J);
      • Threat
        • R(J),XP(d)
      • Vars
        • P(j);OGATEB,XP(G)::R(J)
      • Refutation
        • B(g);
    • Try
      • Q(A);N_PINP(c),P_PINP(f)
      • Threat
        • QAR1(A)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • B(g);
  • Actual
    • R(F);XP(i)
    • Threat
      • B(I),XP(h)
    • Vars
      • B(g);N_GUARD,XR(F)::QAR(A)
      • P(k);N_GUARD,XB(I)::R(J),XP(j)
      • P(f);OGATEB::R(F)
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