MESON Chess Problem Database

Problem Display
PID: 206295 (1b2rr2/3Q4/3p2N1/5P2/4kN2/3R3P/7K/1B1n4 w - - 0 1)

Ianovcic, Anatole Felix

L'Alfiere di Re, 1925

1b2rr2/3Q4/3p2N1/5P2/4kN2/3R3P/7K/1B1n4

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Qxe6#
    • 1...Rc8
      • 2.Qe6#
    • 1...Rd8
      • 2.Qe6#
    • 1...Rxf5
      • 2.Qa4#
    • 1...d5
      • 2.Qxd5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sg3#
      • 1...d5+
        • 2.Rg3#
      • 1...Se3!
    • 1.Qc6+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kxf5!
    • 1.Qb7+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kxf5!
    • 1.Qe7+?
      • 1...Kxf5
        • 2.Rxd1#
        • 2.Rd2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Re3#
        • 2.Rf3#
        • 2.Rg3#
        • 2.Rd4#
        • 2.Rd5#
        • 2.Rxd6#
      • 1...Rxe7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg5#
      • 1...d5+
        • 2.Rg3#
      • 1...Kxf5
        • 2.Rf3#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Rxf5
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAR2(H),XR(e)
    • R(e);N_GUARD::QAR2(H)
    • R(f);SBLOCK,XP(F)::QAR(H)
    • P(c);OGATE,P_PINS(E)::QAB1(H),XP(c)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • P(c);CHECK::B(A)+R(C)
      • Refutation
        • S(a);
    • Try
      • Q(H);CHECK
      • Vars
        • P(c);P_PINS(E),P_SPINP(c)::QAB1(H),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(F)
    • Try
      • Q(H);CHECK
      • Vars
        • P(c);P_PINS(E),P_SPINP(c)::QAB1(H),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(F)
    • Try
      • Q(H);CHECK
      • Refutation
        • R(e);XQ(H)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(c);CHECK::B(A)+R(C)
      • K(b);S_FLIGHT,XP(F)::B(A)+R(C),DCHECK
      • R(e);OGATE,XS(E)::QAR2(H),XR(e)
      • R(f);SBLOCK,XP(F)::QAR(H)
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