MESON Chess Problem Database

Problem Display
PID: 225163 (2r3n1/p7/Kb6/1PQp1p2/3Bk2p/1p3pp1/2R4q/1B2N3 w - - 0 1)

Apro, Laszlo

Chess Life & Review, 1971

2r3n1/p7/Kb6/1PQp1p2/3Bk2p/1p3pp1/2R4q/1B2N3

#2

7 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Rxf2#
    • 1...f4
      • 2.Rd2#
      • 2.Re2#
      • 2.Rf2#
      • 2.Rg2#
      • 2.Rxh2#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Rc1#
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rc3#
        • 2.Rc4#
      • 1...Kd3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rf2#
      • 1...Rxc5
        • 2.Rc4#
      • 1...Bxc5
        • 2.Rd2#
        • 2.Rc4#
      • 1...bxc2
        • 2.Bxc2#
      • 1...fxg2
        • 2.Rf2#
      • 1...f2
        • 2.Rxf2#
        • 2.Rc3#
      • 1...Qg1
        • 2.Rc1#
        • 2.Re2#
      • 1...Qh1
        • 2.Rc1#
        • 2.Re2#
      • 1...b2
        • 2.Rc1#
        • 2.Rxb2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rc3#
        • 2.Rc4#
      • 1...Qxg2!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Bxd4
        • 2.Re2#
      • 1...Re8
        • 2.Rd2#
      • 1...Bc7
        • 2.Rd2#
      • 1...g2
        • 2.Rc4#

This is a version of 225162

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);::B(A)+R(C),XP(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(8)
      • Vars
        • R(k);XQ(F)::B(A)+R(C)
        • P(b);OGATE,P_SPINP(b),XR(C)::B(A),XP(b)
        • P(c);XS(B)::B(A)+R(C)
      • Refutation
        • Q(a);XS(B)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P-FLIGHT,P_SPINP(g),XB(D)::QAR2(F)
      • B(i);SBLOCK,XB(D)::B(A)+R(C),DCHECK
      • R(k);N_GUARD::B(A)+R(C)
      • B(i);S_CUTR(k)::B(A)+R(C)
      • P(d);S_CUTQ(a)::B(A)+R(C)
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