MESON Chess Problem Database

Problem Display
PID: 106276 (7q/1N4n1/PPk5/K2p2r1/3R4/7Q/B1b5/2rR4 w - - 0 1)

Pituk, Alexander

3rd HM., Praca, 1953

(First published on Sat May 23 1953)

7q/1N4n1/PPk5/K2p2r1/3R4/7Q/B1b5/2rR4

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Qc8#
    • 1...Qh5
      • 2.Qc8#
    • 1...Qh6
      • 2.Qc8#
    • 1...Qh7
      • 2.Qc8#
    • 1...Qc8
      • 2.Qxc8#
    • 1...Rg1
      • 2.Bxd5#
    • 1...Rg2
      • 2.Bxd5#
    • 1...Rg3
      • 2.Bxd5#
    • 1...Rg6
      • 2.Bxd5#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Qd7#
        • 2.Qc3#
      • 1...Rxd5+
        • 2.Bxd5#
      • 1...Qxh3
        • 2.Sd8#
      • 1...Bxd1
        • 2.Qd7#
      • 1...Qh4
        • 2.Sd8#
        • 2.Qd7#
        • 2.Qc8#
      • 1...Qc8
        • 2.Qxc8#
        • 2.Qc3#
      • 1...Qd8
        • 2.Sxd8#
        • 2.Qc3#
      • 1...Qe8
        • 2.Qc3#
      • 1...Qf8
        • 2.Qd7#
      • 1...Rg3
        • 2.Rc5#
        • 2.Rd6#
        • 2.Qd7#
      • 1...Rg4
        • 2.Rc5#
        • 2.Rd6#
      • 1...Rf5
        • 2.Qc3#
      • 1...Bb1
        • 2.Qd7#
      • 1...Bb3
        • 2.Qd7#
      • 1...Bd3
        • 2.Qd7#
      • 1...Ba4
        • 2.Qd7#
      • 1...Be4
        • 2.Qd7#
      • 1...Bf5
        • 2.Rd6#
      • 1...Bg6
        • 2.Qd7#
      • 1...Bh7
        • 2.Qd7#
      • 1...Sf5
        • 2.Rc5#
      • 1...Sh5
        • 2.Qe6#
        • 2.Qd7#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Sd8#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 10
  • Sets
    • Q(g);N_GUARD::QAR2(C)
    • Q(g);N_GUARD::QAR2(C),XQ(g)
    • R(d);N_GUARD::B(B),XP(c)
    • S(f);N_GUARD::QAR2(C)
    • S(f);N_GUARD::QAR2(C),XS(f)
  • Actual
    • R(D);P_SPINR(D),XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • R(d);CHECK,OGATE,XR(D)::B(B),XR(d)
      • Q(g);N_GUARD,XQ(C)::S(H)
      • B(b);XR(A)::QAB1(C)
      • Q(g);::QAR(C)
      • Q(g);::QAB1(C)
      • R(d);::QAR(C)
      • B(b);::QAB1(C)
      • B(b);N_PINR(D)::R1(D)
      • S(f);N_PINR(D),S_CUTR(d)::R1(D)
      • S(f);N_GUARD::QAR2(C),XS(f)
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