MESON Chess Problem Database

Problem Display
PID: 17717 (2KR4/8/2R2N2/6r1/3N4/4k1BQ/6n1/1B6 w - - 0 1)

Major, Montgomery

American Chess Bulletin, 1949

2KR4/8/2R2N2/6r1/3N4/4k1BQ/6n1/1B6

#2

8 + 3

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2+?
      • 1...Ke2
        • 2.Qxg2#
      • 1...Kf3!
    • 1.Se4?
      • threat
        • 2.Rc3#
      • 1...Rxg3
        • 2.Qxg3#
      • 1...Rd5
        • 2.Be5#
      • 1...Rc5
        • 2.Bh2#
        • 2.Be5#
        • 2.Bc7#
        • 2.Bb8#
      • 1...Sf4
        • 2.Bf2#
      • 1...Se1!
    • 1.Be1+?
      • 1...Rg3
        • 2.Qxg3#
      • 1...Kf4!
    • 1.Qxg2?
      • threat
        • 2.Sc2#
        • 2.Rc3#
        • 2.Qe2#
        • 2.Qf2#
      • 1...Rd5
        • 2.Qf2#
      • 1...Rc5
        • 2.Sg4#
        • 2.Qe2#
        • 2.Qf2#
      • 1...Rf5
        • 2.Sc2#
        • 2.Sxf5#
        • 2.Sg4#
        • 2.Rc3#
        • 2.Qe2#
      • 1...Rxg3!
    • 1.Qe6+?
      • 1...Kd2
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sf5#
        • 2.Qe2#
      • 1...Re5!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Re2#
      • 1...Rc5+
        • 2.Bc7#
      • 1...Kd3
        • 2.Sf5#
      • 1...Rxg3
        • 2.Qxg3#
      • 1...Rd5
        • 2.Be5#
      • 1...Sf4
        • 2.Bf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • R(E)
      • Vars
        • R(c);OGATE,P_SPINR(c),XB(B)::QAR2(C),XR(c)
        • R(c);N_GUARD::QAR(C)+B(B)
        • S(a);SBLOCK::QAR(C)+B(B),DCHECK
      • Refutation
        • S(a);
    • Try
      • B(B);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR2(C),XR(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);XS(a)
      • Threat
        • DUALS(4)
      • Vars
        • R(c);::QAB1(C)
      • Refutation
        • R(c);XB(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • R(c);CHECK,N_GUARD::QAR(C)+B(B)
      • K(b);P-FLIGHT::R(H)+S(D)
      • R(c);OGATE,P_SPINR(c),XB(B)::QAR2(C),XR(c)
      • R(c);N_GUARD::QAR(C)+B(B)
      • S(a);SBLOCK::QAR(C)+B(B),DCHECK
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