MESON Chess Problem Database

Problem Display
PID: 6604 (7B/3Q4/2K1P1p1/2RNP2R/3kqp2/n3bp2/1P1p4/1b3B2 w - - 0 1)

Ellerman, Arnoldo

1st Prize, Dzien Polski, 1932

7B/3Q4/2K1P1p1/2RNP2R/3kqp2/n3bp2/1P1p4/1b3B2

#2

10 + 9

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Sc3#
      • 2.Sf6#
    • 1...Qd3
      • 2.Sc3#
      • 2.Sf6#
    • 1...Qxd5+
      • 2.Qxd5#
    • 1...Qf5
      • 2.Sc3#
      • 2.Sf6#
    • 1...Qxe5
      • 2.Sc3#
    • 1...Sc2
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sb5
      • 2.Rc4#
  • Keys
    • 1.Rc2!
      • threat
        • 2.Qa7#
      • 1...Qxc2+
        • 2.Sc3#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Qxe5
        • 2.Sc3#
      • 1...Qd3
        • 2.Sf6#
      • 1...Qf5
        • 2.Sc3#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sb5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(g);CHECK,OGATE,P_SPINQ(g),XS(D)::QAR1(I),XQ(g)
    • Q(g);N_PINS(D),P_SPINQ(g),XP(E)::QAR(I)+S(D)
    • S(c);N_GUARD::R1(C)
    • S(c);N_GUARD::R1(C),XS(c)
  • Actual
    • R(C);
    • Threat
      • QAB(I)
    • Vars
      • Q(g);CHECK,N_PINS(D),XR(C)::QAR(I)+S(D)
      • Q(g);CHECK,OGATE,P_SPINQ(g),XS(D)::QAR1(I),XQ(g)
      • Q(g);N_PINS(D),P_SPINQ(g),XP(E)::QAR(I)+S(D)
      • Q(g);N_PINS(D)::QAR(I)+S(D)
      • S(c);N_GUARD::R1(C),XS(c)
      • S(c);N_GUARD::R1(C)
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