MESON Chess Problem Database

Problem Display
PID: 18051 (2B5/8/5p1K/2p2R2/1N2k1pp/3R1q2/4p1N1/7Q w - - 0 1)

Trzesowski, Andrzej

2nd Place, American Chess Bulletin, 1955

2B5/8/5p1K/2p2R2/1N2k1pp/3R1q2/4p1N1/7Q

#2

7 + 7

3147 Chess Problems: Introduction to an Art 1963
3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2
      • 2.Qxg2#
    • 1...Qe3+
      • 2.Sxe3#
    • 1...Qf4+
      • 2.Sxf4#
  • Tries
    • 1.Rfxf3?
      • threat
        • 2.Rfe3#
      • 1...Ke5
        • 2.Rfe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...gxf3!
    • 1.Rf4+?
      • 1...Ke5
        • 2.Qa1#
      • 1...Qxf4+!
    • 1.Qc1?
      • threat
        • 2.Qc4#
      • 1...Qe3+
        • 2.Qxe3#
      • 1...Qf4+
        • 2.Qxf4#
      • 1...Qxd3
        • 2.Qf4#
      • 1...Qxf5
        • 2.Qe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Qf2!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa8#
      • 1...Qe3+
        • 2.Rxe3#
      • 1...Qf4+
        • 2.Rxf4#
      • 1...Qxd3
        • 2.Rf4#
      • 1...Qxf5
        • 2.Re3#
      • 1...cxb4
        • 2.Rd4#
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATE,P_SPINQ(b),XS(B)::QAB(A),XQ(b)
    • Q(b);CHECK::QAB(A)+S(B),XQ(b)
  • Tries
    • Try
      • R(E);XQ(b)
      • Threat
        • R1(E)
      • Vars
        • K(c);P-FLIGHT::R(E)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(d);XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(A)
      • Refutation
        • Q(b);CHECK,XR(E)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • Q(b);CHECK,N_GUARD::QAR1(A),XQ(b)
        • Q(b);N_GUARD,XR(C)::QAR1(A)
        • Q(b);N_GUARD,XR(E)::QAR1(A)
        • P(f);::QAR2(A),XP(f)
      • Refutation
        • Q(b);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(b);CHECK,N_GUARD::R1(C),XQ(b)
      • Q(b);CHECK,N_GUARD::R1(E),XQ(b)
      • Q(b);N_GUARD,XR(C)::R1(E)
      • Q(b);N_GUARD,XR(E)::R1(C)
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