MESON Chess Problem Database

Problem Display
PID: 245988 (4K3/r3p2p/8/1R6/3pk1p1/QN6/BNp1Pb1r/2B2R2 w - - 0 1)

Paslack, Rainer

Europa-Rochade, 2007

4K3/r3p2p/8/1R6/3pk1p1/QN6/BNp1Pb1r/2B2R2

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qxe7#
    • 1...Ra5
      • 2.Qxe7#
    • 1...Ra8+
      • 2.Qxa8#
    • 1...Be1
      • 2.Rf4#
    • 1...Bg1
      • 2.Sd2#
      • 2.Rf4#
    • 1...Bg3
      • 2.Sd2#
    • 1...Bh4
      • 2.Sd2#
      • 2.Rf4#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Re5#
      • 1...Ra8+
        • 2.Qxa8#
      • 1...e5
        • 2.Sd6#
        • 2.Rxe5#
      • 1...Ra5
        • 2.Qxe7#
      • 1...Bg3
        • 2.Sbd2#
      • 1...Rh5!
    • 1.Rxf2?
      • threat
        • 2.Sd2#
        • 2.Rf4#
      • 1...Ra8+
        • 2.Qxa8#
      • 1...Rxa3
        • 2.Rf4#
      • 1...d3
        • 2.Rf4#
        • 2.Qb4#
        • 2.exd3#
      • 1...e5
        • 2.Sd2#
        • 2.Sc5#
      • 1...Rxf2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Re5#
      • 1...Ra8+
        • 2.Qxa8#
      • 1...e5
        • 2.Rxe5#
      • 1...Rh5
        • 2.Sxf2#
      • 1...Ra5
        • 2.Qxe7#
      • 1...Bg3
        • 2.Sbc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::QAR(F),XP(h)
    • R(g);CHECK,OGATE::QAB(F),XR(g)
    • B(b);OGATE::R1(B)
    • B(b);::S(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(H)
      • Vars
        • R(g);CHECK,OGATE::QAB(F),XR(g)
        • R(g);N_GUARD::QAR(F),XP(h)
        • B(b);::S(G)
      • Refutation
        • R(c);
    • Try
      • R(B);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);CHECK,OGATE::QAB(F),XR(g)
        • R(g);XQ(F)::R1(B)
      • Refutation
        • R(c);XR(B)
  • Actual
    • S(D);
    • Threat
      • R1(H)
    • Vars
      • R(g);CHECK,OGATE::QAB(F),XR(g)
      • P(h);::R1(H),XP(h)
      • R(c);N_GUARD::S(D),XB(b)
      • R(g);N_GUARD::QAR(F),XP(h)
      • B(b);::S(G)
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