MESON Chess Problem Database

Problem Display
PID: 99294 (2N5/2pN4/1R1qPP2/1Prk1B1K/2p5/2PrBRPp/5PQ1/8 w - - 0 1)

Molnar, Arpad

Magyar Sakkelet, 1952

2N5/2pN4/1R1qPP2/1Prk1B1K/2p5/2PrBRPp/5PQ1/8

#2

14 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg3
      • 2.Se7#
    • 1...Qf4
      • 2.Se7#
    • 1...Qe5
      • 2.Se7#
    • 1...Qe7
      • 2.Sxe7#
    • 1...h2
      • 2.Rf4#
  • Tries
    • 1.Bxh3?
      • threat
        • 2.Rf4#
      • 1...Ke4+
        • 2.Rf5#
      • 1...Qe5+
        • 2.Rf5#
      • 1...Qxg3
        • 2.Rxg3#
        • 2.Rf5#
      • 1...Qxe6
        • 2.Rf5#
      • 1...Qxd7
        • 2.Rf5#
      • 1...Rxe3
        • 2.Rxe3#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Rd4!
  • Keys
    • 1.Rxd6+!
      • 1...cxd6
        • 2.Scb6#
        • 2.Se7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD,XP(F)::S(N)
    • Q(f);N_GUARD::S(N)
    • Q(f);N_GUARD,P_PINB(H)::S(N)
    • Q(f);N_GUARD::S(N),XQ(f)
    • P(b);N_GUARD::QAB(B)+R(E)
  • Tries
    • Try
      • B(H);XP(b)
      • Threat
        • QAB(B)+R(E)
      • Vars
        • K(e);CHECK,S_FLIGHT::QAB(B)+R(E)
        • Q(f);CHECK::QAB(B)+R(E)
        • Q(f);XP(K)::QAB(B)+R(E),DCHECK
        • Q(f);XS(M)::QAB(B)+R(E),DCHECK
        • R(a);OGATE,XB(D)::QAB(B)+R(E),XR(a)
        • Q(f);::QAB(B)+R(E),XQ(f)
      • Refutation
        • R(a);
  • Actual
    • R(J);CHECK,XQ(f)
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